American 180 Rifle
Contents
1. Figure 1 The American 180 disassembled 1 Barrel Group 2 Receiver Top Strap 3 Bolt 4 Bolt Spring S Receiver Top Retainer Pin 6 Receiver 7 Trigger Group 8 Stock 9 Feed Block 10 Drum Magazine 11 Winding Mechanism 3 GUIDES TO FOLLOW IN DIS ASSEMBLY AND ASSEMBLY These guides should be followed when disassembling and assem bling the American 180 a b Follow the step by step ex planation Do to disassemble orassemble the weapon again st time If itis necessary to apply force do it carefully so that none of the parts are damaged As the weapon is disassembl ed line up the parts in the order of their removal This procedure helps in assembly of the weapon which is done in reverse order of disassembly 4 PROCEDURE FOR DIS ASSEMBLY a Before disassembling the American 180 make sure that the weapon is CLEAR Pull back on the magazine catch figure 2 and remove the mag azine Inspect the feed block and chamber to ensure no ammunition is presentin either Allow the bolt to go forward by squeezing on the trigger Note To pull back retract the bolt pull back ont he bolt handle to its rear most position until it stops then manually return it forward Detachment of the rear stock is done by pushing in on detent Figure 2 on top of the stock near end of receiver with your thumb and simultaneously pulling o2. 7 trigger depressed the bolt will h Removal of the trigger hous go forward Pull the bolt to the rear the sear should again engage the bolt while the trig ger is depressed With the trigger released pull the bolt handle to the rear cocking the weapon Push the selector to the right automa tic position The bolt should not move until the trigger is squeezed With the selector in the auto matic position pull the bolt 5 ASSEMBLING THE AMERICAN 180 Assembly is done in reverse order of disassembly handle to the rear hold the trigger back The bolt should move back and forth freely not being engaged by the sear Test the safety with the selec tor in both the semi automatic and the automatic positions 6 OPERATION CHECK With the American 180 fully assembled and unloaded and the safety rotated Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Section Il How the American 180 S M G Functions 1 GENERAL a By disassembling and assem bling the American 180 you should become familiar with the parts The next step is to learn how these parts func tion If the user understands how the American 180 works he will be able to keep it in operating condition and re duce any stoppages which might occur during firing This knowledge will give the user confidence in his weapon Each time a cartridge is fired the parts inside the American 180 function in a given o
3. American 180 Rifle Instruction Manuai American Arms International Inc amp LMANUFACTURING 4177 RIDDLE BY PASS ROAD RIDDLE OR 97469 PHONE 541 874 2137 FAX 541 874 3107 by RICHARD W HALL AMERICAN ARMS INTERNATIONAL INC ARMAMENTS TECHNICIAN PUBLISHED BY AMERICAN ARMS INTERNATIONAL INC SALT LAKE CITY UTAH 1980 PREFACE WARNING READ PREFACE COMPLETELY BEFORE USING WEAPON This weapon is a precision instrument which requires proper handling and maintenance to assure the safety of the user At the same time it is arugged weapon fully tested in every conceivable environment and if properly maintained will give many years of satisfactory service Proper and safe handling is required of all weapons This is even more important where an automatic weapon is concerned Purchasers are presumed to be familiar and experienced with weapons nevertheless ensure that everyone who will handle this weapon reads and understands this preface and the manual before attempting to use the weapon WARNING If this firearm is carelessly or improperly handled unintentional discharge could result and could cause injury death or damage to property This manual gives basic advice on the proper handling and functioning of the American 180 weapon Safety of the firer and others in range of the weapon depends upon mature compliance with the information given in this manual and on the adoption and use of accepted safety practices i
4. a With Laser Lok and magazine 177 rounds 12 651 Ibs With loaded magazine 177 rounds 7 40 Ibs 3 MISCELLANEOUS DATA Initial velocity 1255 feet second Chamber pressure 23 000 PSI approximate Bullet weight 40 grains Rate of fire on automatic 1800 rounds per minute Varies with brand of ammunition used 4 SIGHTS Front fixed blade type Rear ramp type elevation 1 2 minute of angle windage Laser Lok Optional pin point direct illumination 5 NOMENCLATURE OF COMPONENT PARTS See Figure 1 and list on following page CHAPTER 2 Sectionl Assembly and Disassembly 1 GENERAL The submachine gun will function correctly if itis kept clean and is properly oiled and maintained This chapter explains disassembly assembly care and cleaning stoppages and imme diate action It 1 a guide for mech anical training and outlines the procedures to be followed 2 NOMENCLATURE The names of the parts of the submachine gun figure 1 should be learned dur ing instruction in disassembly and assembly by referring to the illus trations and parts list Generally the parts are named for the job they do i e the trigger guard actually guards the trigger from accidental or unintentional dis charge Adequate cleaning and oiling can be accomplished with the weapon broken down into the following groups Receiver group Barrel group and Magazine Some further disassembly of the maga zine is required
5. a stoppage and continue firing Immediate action is the prompt action taken by the firer to reduce a stoppage without con sidering the cause 2 MALFUNCTIONS a Failure to function freely sluggish operation of the American 180 is usually due to excessive friction caused by dirt lack of proper lubrication burred or dented guide rod or dented or bent receiver Uncontrolled automatic fire run away gun uncontrolled auto matic fire is fire that continues after the trigger has been re leased This may be caused by CAUSE OF STOPPAGES Stoppage Cause How to Reduce Failure Dirty or dented magazine Replace magazine to Feed Weak or broken magazine spring Replace magazine Deformed ammunition Replace ammunition Worn or broken magazine catch Replace catch Failure to Dirty chamber Clean chamber Chamber Obstruction in chamber Remove Weak drive spring Replace spring Failure Defective ammunition Replace ammunition to Fire Defective firing pin Replace bolt Failure Weak driving spring Replace driving spring to Extract Broken extractor Replace extractor Failure Not likely to occur to Eject Failure Worn sear Replace sear toCock Worn sear notch Replace bolt Bent guide rod Replace or straighten rod Dirt behind cocking knob Clean cocking knob the following stoppages of submachine 1 Worn sear nose 2 Worn sear notch 3 Broken sear 4 Short recoil In case of uncontrolled auto matic fire keep the gun poin
6. aining Pin Spring Spring for Barrel Retaining Lug Spring for Extractor Spring for Trigger Assembly Stop Pin Spring for Magazine Retainer 18 2 44 248 A 2 49 28 3 2 06 232 3 m 2 5 1 2 04 2 36 TA 240 2 6 ES 2 24 oe 2 03 15 21 2 23 238 2 2 1 2 35 2 0 Description Safety Tension Spring Set Screw for Cocking Knob Screw for Rear Sling Ring Sear Screw Barrel Retaining Lug Pin Extractor Retaining Pin Safety Retaining Pin Magazine Retainer Pin Retainer Spring Pins for Feed Block 2 Safety Bearing Cocking Knob Lock Washer Spring Washer TRIGGER HOUSING ASSEMBLY 3 01 Trigger Housing 3 02 Trigger 3 03 Trigger Spring 3 04 Sear Return 3 05 Grip Retaining Bolt 3 06 Trigger Retaining Pin 3 07 Trigger Return Plunger 3 08 Sear Bearing 3 09 Grip Retaining Bolt Washer STOCK ASSEMBLY 4 01 Stock Release Pin 4 03 Stock Mounting Plate 4 04 Fore stock 4 05 Trigger Assembly Stock 4 06 Shoulder Stock 4 08 Butt Pad 4 09 Stock Retaining Spring 4 10 Screws for Stock Mounting Plate 2 4 11 Mounting Plate Retaining Screw 4 12 Washer for Mounting Plate Retaining Screw SIGHT ASSEMBLY 5 01 Rear Sight Complete 5 02 Sight Mounting Rail 5 03 Sight Retaining Screw 5 04 Sight Rail Mounting Screws 2 5 05 Sight Rail Mounting Screw Washers 2 5 06 Sight Retaining Screw Washer SHORT BARREL ASSEMBLY 8 01 Short Barrel 8 02 Front Sight 8 03 Set Screw for Fro
7. d position The trigger must be released and pulled to fire again b Automatic If the trigger has not been released the bolt will continue forward and the cycle of operation will be repeated OPERATION OF SAFETY The American 180 has a positive safety that blocks the sear when rotated to the safe position Figure 11 if the magazine is partially filled Section Ill Operations 1 GENERAL Before firing the American 180 the firer must know how to fill the magazine must know how to load fire and unload the weapon and must observe safety precautions These points are covered in this section TO FILL MAGAZINE CAUTION Before attempting to fill the magazine all spring ten sion should be released from the magazine winder mechanism or the magazine winding brake should be engaged a Press your thumbs upon the clips of the magazine winding device and catch it with your fingers figure 11 b Press the lock on the base and turn the magazine base until you see the filled chamber through the loading slot of the base figure 12 The marking arrow visible on the magazine should be positioned below the narrow protrusion of the base Figure 12 Lig c Lay the first cartridge in the slot on the base of the maga zine figure 13 Press the lock of the magazine and slowly rotate the magazine base The cartridge will go into the mag azine without force of any kind Repeat this proce
8. e feed block into the chamber The bolt continues forward and fires the cartridge When the car tridge is fired the chamber pres sure forces the bullet out of the muzzle of the barrel At the same time this pressure overcomes the forward movement of the bolt and starts it to the rear By the time the bolt and empty cartridge case have moved to the rear far enough to open the rear end of the cham ber the bullet has left the barrel and the chamber pressure has decreased In the American 180 the chamber pressure is relatively low and the bolt is relatively heavy thus eliminating the need for the steps of locking and unlocking During the rearward movement of the bolt the empty cartridge case is extracted and ejected the driv ing spring is compressed and the next round in the magazine moves into the paws of the feed block The rearward movement of the boltis stopped by the compressed driving spring OPERATION OF THE TRIGGER AND SEAR a When the trigger is pressed it rotates around the trigger pin and forces the sear to rotate around the sear pin causing the sear nose to be moved down and away from the sear notch in the bottom of the bolt This allows the bolt to move forward under the action of the expanding drive spring b Automatic fire With the sel ector pushed to the right auto matic position ifthe triggeris held to the rear the nose of the sear cannot engage the sear notch of the bolt The bolt
9. eapons to fail However its con tinued dependability and accuracy depend on its receiving proper care and cleaning The chamber and bore receiver and moving parts must be kept clean and very lightly oiled The same care must be given the magazine THE FREQUENCY OF CLEAN ING The American 180 requires thorough cleaning after 2000 rounds For this you can disas semble the weapon as described Prior to reassembling all func tional parts have to be very lightly oiled AMERICAN 180 PARTS LIST BARREL ASSEMBLY Part Number 1 01 1 02 1 03 1 04 1 06 1 07 1 09 1 10 1 12 HOUSING ASSEMBLY 2 01 2 03 2 04 2 05 2 06 2 07 2 08 2 09 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 17 2 18 2 19 2 21 2 23 2 24 2 25 2 26 2 27 2 29 2 30 2 31 2 32 2 33 FULL AUTOMATIC Description Barrel Front Sight Sling Ring Barrel Band Screw Nut Set Screw for Front Sight Washer Slot Nut Top Strap Retaining Pin Cocking Handle Safety Bolt Spring Guide Screw for Barrel Holder Selector Pin Dowel Retaining Pins for Feed Block 2 Steel Sleeve for Trigger Assembly Stop Steel Sleeve for Stock Retaining Pin Selector Retaining Pin Stop Pin for Trigger Assembly Bolt Barrel Retaining Lug Sear Cocking Knob Bolt Magazine Retainer Receiver Housing Top Strap Cover Feed Block Complete Magazine Retainer Release Cocking Knob Dust Cover Extractor Rear Sling Ring Bolt Spring Selector Ret
10. ff the stock figure 3 Removal of barrel is done by loosening barrel locking screw and removing the barrel by pressing barrel clip and draw ing barrel away from the re ceiver Figure 3 Figure 4 d Remove feed block by placing thumb and forefinger on either side of the feed block and pul ling up away from receiver figure 4 Removal of cover is done by firmly holding the receiver with one hand With the heel of the other hand gently tap forward on the rear of the cover Lift up Pr on the rear of the cover while moving slightly forward fig ure 5 Remove the cover retaining pin from either side of the receiver figure 6 ing depress the stop pin by inserting a steel punch into the hole and pressing figure 8 Simultaneously the trigger housing has to be drawn back and the sear positioned with the forefinger so that it does not interfere with the removal of the trigger housing figure 9 Figure 5 forward into firing position figure 10 the following operation checks may be made Push the selector to the left With the trigger released pull the bolt handle sharply to the g Remove the bolt by drawin back the rear The bolt should be en to get one finger on the face of gaged and held by the sear the bolt by pulling back and b Squeeze and maintain press up with this finger the bolt will ure on the trigger With the leave the receiver figure
11. mbered the bolt continues to move forward The extractor springs out under and snaps onto the rim of the cartridge At the same time the fixed firing pin strikes the primer of the cartridge firing the cartridge At the instant of firing the cartridge is enclosed in the chamber and the rim of the cartridge is engaged by the ex tractor 7 10 EXTRACTION When the cart ridge is fired the gas pressure forces the bullet out of the muzzle and the empty cartridge case out of the chamber pushing the bolt to the rear The extractor holds the base of the cartridge case against the bolt The bolt con tinues moving to the rear carry ing the empty cartridge case with it Extraction is completed when the front of the cartridge case clears the rear of the chamber If the cartridge is not fired the ex tractor will remove it from the chamber when the bolt is manu ally pulled to the rear EJECTION As the bolt moves to the rear the empty cartridge case is held by the extractor When the front of the cartridge case clears the rear of the chamber with the extractor serving as a pivot point the cartridge case is deflected out of the ejection opening in the bot tom of the receiver COCKING a Semi automatic As the bolt moves to the rear the drive spring iscompressed the nose of the sear will move up As the bolt moves forward the sear nose will engage in the sear notch and hold the bolt to the rear in a cocke
12. n handling weapons CUSTODIAN OF THE WEAPON MUST ENSURE THAT ALL WHO HANDLE ARE FULLY TRAINED IN ACCEPTED GUN SAFETY PROCEDURES AND HAVE FAMILIARIZED THEM SELVES WITH THE CONTENTS OF THIS MANUAL BEFORE USE OF THE WEAPON WARNING Keep hands and body free from ejection path and ejection port Expended cartridges exit from the weapon at a high rate and at a high temperature Firer is advised to wear long sleeve garments when firing the weapon and to hold the weapon by the hand grips provided Use only high quality ammunition in this weapon Qual ity of ammunition varies and inexpensive or poorly made ammu nition can cause ammunition malfunction NOTICE American Arms International Inc or any of its affiliates shall not be responsible for injury or death or damage to property resulting from either intentional or accidental discharge of this firearm or from its function when used for purposes or subjected to treatment for which it was nat designed American Arms Interna tional Inc will not honor claims involving this firearm which result from carelessness or improper handling unauthorized adjustment or parts replacement modification of any type corrosion neglect or the use of ammunition other than original high quality commer cially manufactured ammunition in good condition or any combi nation of the above American Arms International Inc will not honor claims involving this firearm for any reason or cause when
13. nt Sight 8 04 Vertical for Fore Stock 8 05 Retaining Screw for Vertical Fore Stock 4 08 m 30 405 5 03 Y 5 06 0 2 23 5 02 2 19 um Pr 5 05 1 5 04 4 8 0 8 02 8 04
14. rder This is known as the cycle of operation The cycle of operation of small armsis broken down into eight basic steps However in the American 180 two of these steps locking and unlock ing do not occur The six basic steps of the cycle of operation of the American 180 are listed below in the proper sequence although more than one step may be occurring at the same time 1 Feeding the placing of a cartridge in the feed block in front of the bolt so it can be chambered This action takes place in the magazine generally but can be accomplished manually Chambering moving the cartridge forward untilitis properly seated in the chamber 3 Firing the striking of the primer of the cartridge by the firing pin to ignite the cartridge Extraction removal of the empty cartridge case from the chamber Ejection removal of the empty cartridge case from the receiver 6 Cocking retraction of the bolt far enough so that it will pick up a new car tridge and as it moves forward will have enough energy to fire the new cartridge 2 4 5 2 FUNCTION OF THE AMERICAN 180 As the bolt is moved back to a cocked position the driving spring is compressed and the sear en gages the sear notch of the bolt When the trigger is pressed the sear releases the bolt which is driven forward by the drive spring During this forward movement the bolt pushes a cartridge from th
15. ss for 59 rounds d After having loaded 59 rounds you have to turn the loading slot over the full chamber Then you will feel a resist ance called step resistance The loading slot willopen once again with an empty cham ber and repeat the whole pro cess Loading the second and the third layers is performed just like the first one CAUTION Do not use force when inserting rounds Do not skip a chamber It is advisable to always load full layers of ammunition either load 59 rounds 118 rounds or the full limit of 177 rounds This prevents the magazine from drop ping loose rounds when the magazine is installed or removed Note It is advisable to put the magazine on a non slip surface Figure 13 when loading The magazine also can be loaded by means of a spe cial loading device e Installation of the magazine winding device is done by push ing the clips of the magazine winding device into the holes of the base until they lock in place figure 14 CAUTION A winding device im properly installed may come off during firing and damage the spring TO LOAD THE AMERICAN 180 a Insert the wide protrusion of the magazine base into the magazine guide of the barrel and press the narrow protru sion tightly until the magazine snaps into place figure 15 Note Pulling back the magazine clip with your thumb facilitates the installation of the magazine b Winding the magazine Wind up clock
16. such claims are made by the second or subsequent owner This weapon was assembled from quality controlled compo nents tested and inspected by quality control personnel before leaving the factory Please read the section of assembly disassem bly instructions before examining the weapon at time of delivery We congratulate you on your decision to purchase the Ameri can 180 weapon This weapon represents the finest quality in firearms and we are proud to produce it Charles W Goff Jr President CHAPTER 1 Section 1 General The American 180 Submachine Gun is an air cooled blow back operated magazine fed weapon weighing approx imately 7 40 pounds with a loaded 177 round capacity drum magazine The exterior surface of the rear portion of the barrel contains a series of annu lar flanges which serve to dissipate heat and cool the barrel during firing The hand of the firer is protected on the underside of the barrel by a high impact plastic fore grip A rear grip is also provided Sling swivels are att ached to the barrel and the rear of the receiver for attachment of a rifle sling By use of a selector pin the weapon may be fired in either the automatic or semi automatic mode Section Il Description 1 BARREL Diameter of bore 217 5 51 Number of grooves 5 Twist in rifling uniform one turn in 16 Barrel length 16 or 9 2 GUN Overall length 36 with long barrel Sight radius 237 Weight dat
17. ted at the target 3 STOPPAGES a Stoppages are classified in ac cordance with the six steps in the cycle of operation Stop pages are usually the result of faulty ammunition or improper care of the gun A knowledge of how the gun functions will enable the firer to classify and correct the stoppage Listed below are the causes of stop pages which might occur 1 Failure to Feed cartridge from the magazine is not positioned in the feed block in front of the bolt Most 2 3 4 5 6 guns are failure to feed caused by defective or dirty magazines Failure to Chamber cartridge from the feed block is not seated in the chamber Failure to Fire the cart ridge is chambered but does not fire Failure to Extract if the cartridge fires the chamber pressure will usually push the empty cartridge case out of the chamber If the cartridge case is not com pletely removed from the chamber and the bolt is retracted then there is a failure to extract This stop page seldom occurs Failure to Eject the empty cartridge case is not e jected from the receiver Failure to Cock if the bolt is retracted and is not held by the sear or if during firing the bolt does not move to the rear farenough to clear the cartridge in the feed block the wea pon has failed to cock b Common stoppages the two most common stoppages are 1 Failure to Feed usually caused by dir
18. ty magazine or from a magazine which is not wound properly or damaged magazine Failure to Fire usually caused by defective ammunition 2 Cause of stoppages the chart on the preceding page lists common causes of various stoppages d Prevention of stoppages periodic inspection and proper care and cleaning will reduce the possibility of the American 180 having stoppages 4 IMMEDIATE ACTION a As the first step in clearing a stoppage pull back on the bolt handle and return it to its for ward most position Inspect the chamber from the bottom of the weapon through the e jection port for the presence of jammed ammunition This is usually caused by defective ammunition Place the zine winding brake in the position remove the magazine and clear the jammed rounds manually from the chamber area Replace the magazine remove the magazine winding brake pull the bolt handle to the rear and return it to the closed position and again attempt to fire b Ifa failure to fire occurs again move the magazine winding device to the brake posi tion Remove the magazine and inspect the weapon in order 0 locate and clear the stoppage Replace the magazine move the winding device lever to the center and continue to fire Section V Care and Cleaning 1 DEPENDABILITY AND ACC URACY The American 180 will function under conditions that would cause some automatic w
19. will continue to move forward and backward firing the weapon automatically until the trigger is released c Semi automatic fire With the selector pushed to the left semi automatic position when the trigger is pulled the nose of the sear disengages from the sear notch on the bottom of the bolt allowing the bolt to move forward At the same time under the action of the sear spring the sear is moved back into position to engage the bolt and hold it to the rear until pressure is released from the trigger 4 FEEDING a When a loaded magazine is placed on the weapon the magazine catch holds the mag azine in position The bottom cartridge is held by the feed paws of the feed block through the action of the magazine spring and follower When the bolt moves forward it removes the round from the feed block b When the bolt moves to the rear and clears the feed block the next cartridge is placed in the feed block by the action of the magazine spring and foll ower CHAMBERING The bolt moving forward under the action of the expanding drive spring pushes the cartridge out of the feed block The bullet ramp of the feed block aids in aligning the cartridge with the chamber As the bolt con tinues forward the cartridge is pushed into the chamber by the front of the bolt The base of the cartridge protrudes slightly from the chamber when the cartridge is fully seated FIRING After the cartridge is cha
20. wise until it stops about 3 turns for a full mag azine figure 16 Winding de vice stop lever must not be under tension CAUTION If magazine is only partially filled do not wind com pletely Wind only 1 turns for each 59 rounds layer Pull back on the bolt handle until it stops and push it for ward into its forward most position The American 180 is now ready to fire 4 UNLOADING a In order to remove a partial or full magazine the magazine winding device stop lever must be placed in the position mark ed outside away from center Pull back on magazine clip and lift off magazine Inspect the chamber look and feel 5 SAFETY PRECAUTIONS _ Safety cannot be overemphasized b Never consider a weapon to be safe Never playfully or carelessly point a weapon at anyone Load the weapon only when ready to fire Take safety off only when weapon is raised to fire Never leave any obstruction in the muzzle or base Figure 16 Section IV Malfunction Stoppages and Immediate Action 1 GENERAL a A malfunction is a failure of the weapon to function sat isfactorily Astoppage is any unintentional interruption in the cycle of operation If the American 180 stops firing through no fault or intention of the firer or an attempt to fire is made and the weapon fails to fire then a stoppage has occurred The firer must be able to reduce
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