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1. 11 2 insert a new cartridge in the barrel through the ejection port fig 22 and release the cocking lever to reclose the bolt B using the cartridge drop lever when the cartridge is in the maga zine 1 rest the stock on your hip and open the bolt by hand the car tridge in the chamber is extracted and ejected from the gun fig 23 2 press the cartridge drop lever fig 24 Release the cocking lever to reclose the bolt In this way the cartridge will pass quickly from the magazine to the chamber 12 15 Unloading this operation must be carried out with the gun safety catch engaged see Safety page 7 and the barrel pointed in safe direc tion To unload the shotgun proceed as follows 1 open the bolt the cartridge in the chamber will be extracted and ejected fig 25 2 close the bolt gently releasing the clocking lever fig 26 3 reverse the gun and thrusting the carrier towards inside press the cartridge retaining lever from the front with the right hand index finger fig 27 the first cartridge will come out The carrier latch must be pressed for each released cartridge WARNING Gun can be unloaded by repeating the operation as described under point B this section above of the chapter Car tridge replacement 14 15 Gun stripping Before attempting any work on your M4 make sure that the cham ber and the magazine of your shotgun are unloaded See th
2. trigger releases the cocked hammer which strikes the firing pin igniting the primer and the propel lant within the shell The expanding gases exert pressure on all sides of the shell casing driving the projectile for ward down the bore An equal amount of force is inter cepted in the gas system unlocking actuation of the breech mechanism that results in the opening of the chamber extraction removal of the cartridge case from the chamber ejection expulsion of the cartridge case from the weapon cocking the resetting of and storage of energy in the mechanism which provides the energy needed to ignite the primer of the live chambered cartridge feeding the transference of the live cartridge from the feed mecha nism in the direction of the chamber chambering the insertion of the live cartridge into the chamber of the weapon locking the actuation of the breech mechanism that results in the closing and sealing of the chamber The shotgun is now ready to be fired Cartridge drop lever operation The feeding system operates by means of a special cartridge drop lever the outer portion of which protrudes below the receiver and is thus easily reached by the trigger finger The hammer spring forces the cartridge drop lever upwards to disen gage it from the carrier latch which pulled by the carrier latch spring rotates clockwise to allow a cartridge to exit from the magazine As the cartridge falls into position on the carrier
3. Contents 1 Cartridge drop lever operation Ha eee eee 1 Assembly from packaged gun un seen 2 Ne 7 Telescoping stock adjustment NR 7 8 Cartridge replacement AA OASIS 11 13 GURSITDRIND seele 15 Firean OVS LINAS ae ee een 24 Shotsun assembly mas 24 TROUND IE SHOOUING rer ir RER 31 CMO LES Ol ase 31 Rear sight adjustment pp 31 Windage adjustment au 31 Elevation adjustment etsase AEA AREAS 32 Internal choke when supplied ass Bussi 33 Threst und limiter 22 3 essen 36 SAFETY RULES The safety warnings contained in this booklet are an important remin der to whomever owns or utilises firearms Firearms if not handled correctly can be dangerous and have the potential to cause serious and irreparable damage Never point a firearms at anyone or in any direction other than a SAFE direction i e downrange Always handle firearms as if they were loaded Keep your finger off the trigger until the target is in view Never fire the combat shotgun without the forearm installed both right and left halves Keep the gun s safety on and finger away from the trigger during loading or unloading of the gun Before firing at the target ensure that no person animal or other object that could be hit is behind or near the target Never give or take from anyone an arm that doesn t have the breech open During the loading of ammunition follow scrupulously t
4. artridges with a case longer than the chamber as this would have serious consequences for both the gun and shooter No adjustment to the shotgun is necessary to fire any of the ammuni tion listed above All Benelli shotguns are subjected to a 1370 bar burst test at the Italian National Proof House in Gardone Valtrompia Brescia 31 Rear sight adjustment The rear sight can be adjusted for both windage and elevation if the standard factory setting does not meet shooter requirements Before attempting any work on your M4 make sure that the cham ber and the magazine of your shotgun are unloaded See the instructions on loading and unloading on pages 8 13 Windage adjustment Using a coin or the rim of a shell cartridge to rotate the windage adjustment screw fig 72 located on the right side of the rear sight assembly in the desired direction Rotating the windage adjustment screw in a counter clockwise direc tion moves the point of impact on target to the left in a clockwise direction moves the point of impact to the right Note on the wind age scale the amount of adjustment made fig 73 Elevation adjustment Use a coin or the rim of a shell cartridge to rotate the elevation adjustment screw fig 74 located on top of the elevating platform in the desired direction Rotating the elevation screw in a counter clockwise direction raises the aperture and the point of impact of on target in a clockwise direction lo
5. e instruc tions on loading and unloading on pages 8 13 M4 is a modular style shotgun no armorer tools are required for its stripping Stripping procedure 1 open the bolt fig 28 2 move the cartridge drop lever fig 29 U1 SYA ww 16 unscrew the fore end cap fig 30 remove the barrel along the magazine tube fig 31 slide down the twin forearms fig 32 grip the barrel and move it forward to remove the whole barrel breech unit from the receiver figs 33 34 hold the bolt handle firmly and press the carrier button fig 35 allowing the bolt to move a little way forward until it stops fig 36 7 yD Fun 18 twist and pull off the bolt handle fig 37 remove the bolt assembly from the receiver pulling it forward fig 38 remove the firing pin stud from the bolt assembly ensuring that the firing pin and the relative return spring remain inside the bolt fig 39 remove the firing pin and the firing pin spring fig 40 remove the locking head pin from its seat fig 41 OS 20 remove the locking head fig 42 extract the axle bush from the stock receiver unit pushing it with the point of the firing pin fig 43 pull out the axle bush using the large end of the bolt handle figs 44 45 press the carrier button and extract the trigger group towards the front fig 46 21 22 17 starting with the telescopin
6. ech extension on the receiver be sure that it does not strike against the bolt locking head 7 with the barrel extension resting on the bolt head and the bolt head fitting into the recess formed into the barrel extension slip the barrel into receiver A metallic click will indicate the barrel is correctly seated fig 8 po me M 8 screw on the fore end fastening cap on the end of the tubular magazine and tighten firmly until the barrel and the fore grip are locked perfectly against the receiver fig 9 The chrome barrel extension must be completely contained by the receiver None of the chromate parts must be visible at the front of the receiver fig 8 FE aoe mm 9 close the bolt by pressing the special carrier control button fig 10 The shotgun is now ready to be fired Safety Press the safety button on the trigger guard until its red ring indicat ing firing position is no longer visible figs 11 12 Telescoping stock adjustment M4 is fitted with a two position telescoping stock short extended Starting with the telescoping stock extended and to shorten it fig 13 a depress locking button b rotate the extendible stock clockwise rear view c push it forward till front stop d rotate the stock counter clockwise and release the button To extend the stock follow the reverse sequence Loading 1 The r
7. ed dot on the cartridge drop lever indicating that the ham mer is cocked must be clearly visible To bring lever to this posi Before starting any operation on your shotgun make sure that the tion press the carrier button fig 14 and open the bolt by hand chamber and the magazine are unloaded then bring it to close position again fig 15 l 2 with the bolt closed and the hammer cocked reverse the gun The magazine can hold six cartridges 76 mm 3 long or 70 mm 2 pointing the barrel downwards 3 4 Loading procedure NOTE Make sure that the shotgun safety catch See Safety page 15 is engaged and the hammer cocked so that the carrier latch can retain the cartridges as they are inserted in the magazine see Assembly procedure point 3 page 3 WARNING for safety reasons verify if by opening the breech bolt the shotgun is unloaded Then close the breech bolt again 3 insert a cartridge into the magazine fig 16 push it until it is retained by the carrier latch which engages automatically fig 17 Repeat the operation until the magazine is fully loaded Now the gun cannot be fired unless a cartridge is placed in the bar rel as to one of the following procedures SAS _N Dunn ZZZZ N A direct procedure 1 open the bolt fig 18 and in the same time insert a cartridge into the barrel through the case ejection port fig 19 2 release the cockin
8. g lever the bolt will push the cartridge on the carrier into the chamber and stop in the closed position 10 B indirect procedure 1 open the bolt and hold it in this position through the cocking lev er Press in the same time the cartridge drop lever so that the first cartridge in the magazine drops into the carrier fig 20 2 release the cocking lever the bolt will push the cartridge on the carrier into the chamber and stop in the closed position WARNING with the procedure B the number of cartridges in the magazine will be reduced by one round A new cartridge can be inserted see above to fill the magazine completely NOTE during this operation always point the gun in a safe direc tion even though the safety catch is engaged see Safety page 7 Now the gun is loaded when the safety catch is moved to firing posi tion red ring visible the gun is ready for use Cartridge replacement this operation must be carried out with the gun safety catch engaged see Safety page 7 and barrel pointed in a safe direc tion To replace a cartridge in the chamber two procedures can be fol lowed A by manual replacement of a new cartridge B by using the cartridge drop lever A manual replacement when the cartridge is not in the magazine 1 reset the stock on your hip and pull the cocking lever to open the bolt the cartridge in the chamber is extracted and ejected from the gun fig 21
9. g stock extended a depress locking button b rotate the stock clockwise rear view c push it forward till the line marked on the recoil tube fig 47 d rotate the stock counter clockwise e pull it to the rear off the recoil tube figs 48 49 18 take the receiver with a hand and with the other unscrew the pistol grip in a counter clockwise direction until free fig 50 19 using the bolt handle remove the gas cylinder plugs fig 51 20 remove the gas pistons from the front end fig 52 The gun is now completely stripped the parts to be inspected and cleaned are all separated 23 ie a SSS i 0 email Firearm cleaning Because of their construction simplicity and correct choice of materi als Benelli shotguns do not require any particular maintenance inter vals The following is recommended however 1 anormal cleaning of the barrel after use 2 periodically clean powder or foreign residues from the trigger assembly trigger hammer etc and then lubricate them 3 disassemble clean and lubricate the bolt group 4 according to the ammunition type used periodically dismantle and clean the gas cylinders and gas cylinder pistons NB the gas system must not be lubricated 24 5 to keep the gun in good order oiling of the parts subject to atmospheric corrosion is recommended NB all barrels are internally chromium plated Shotgun assembly For correct assembly of t
10. he direc tions in this booklet and ensure that the ammunition is in perfect condition 9 Before using with the gun unloaded and the action locked open check that the barrel of the shotgun is clear of any obstruction 10 Before shooting an unfamiliar gun be sure that you understand completely its functioning lack of experience can be the cause of serious accidents 11 When firing it is advisable to wear ear and eye protection 12 Always keep hands and fingers away from the muzzle of the gun to avoid wounds or burns 13 Firearms and ammunition should always be stored separately and locked well away from children s reach 14 Do not drink alcoholic beverages before or during the use of firearms REMEMBER PAY CLOSE ATTENTION TO HOW YOU HANDLE YOUR GUN ACCIDENTS ALMOST ALWAYS RESULT FROM FAILURE TO OBSERVE THE FUNDAMENTAL SAFETY RULES Operation Before attempting any work on your M4 make sure that the cham ber and the magazine of your shotgun are unloaded See the instructions on loading and unloading on pages 8 13 The M4 shotgun is a semi automatic tubular magazine fed weapon chambered for the 12 gauge 18 4 mm shotshell cartridge The oper ating system employed in this weapon is the improved ARGO Auto Regulating Gas Operated Twin two gas pistons cylinders ports System with rotating bolt head with dual locking lugs There are eight general steps in the operating cycle of M4 firing squeezing the
11. he gun proceed as follows 1 install gas pistons fig 55 Using the bolt handle screw gas plugs into cylinders fig 56 rotate the pistol grip onto the receiver clockwise direction from rear sight fig 57 until it is against the back end of the receiver then align it with the receiver max are additional turn install the telescoping stock figs 58 59 following in the reverse sequence of which it was disassembled lift the stock receiver group as far as the receiver and press the carrier button insert the complete trigger group with cocked hammer on the receiver in slightly forward position then draw it back until engaged in the rear of the receiver itself fig 60 insert the axle bush into the hole for it fig 61 insert the bolt head into the front of the bolt carrier the hole on its leg must be aligned with the slot of the bolt fig 62 25 26 27 7 insert the locking head pin in its hole on the locking head s stem through the slot on the bolt fig 63 NOTE the reference line on the top of the pin is visible and aligned with the bolt centerline 8 insert the firing pin and the firing pin spring inside the bolt fig 64 NOTE always make sure that the firing pin has been inserted togeth er with its spring 28 9 insert the locking pin stud in its seat fig 65 WARNING if firing pin and relative locking pin have been correctly assembled at the end of the operati
12. it presses against the cartridge drop lever which rotates in the opposite direction to prevent a second cartridge from exiting The end of the cartridge drop lever which protrudes from the receiver is marked with a red point When the red point is visible the hammer is cocked and the gun is ready to fire otherwise the hammer is not cocked Assembly from packaged gun Components of the package stock receiver bolt barrel breech half fore end bolt handle Procedure 1 Insert completely the bolt handle into the breech bolt unit fig 1 2 unscrew the fore end cap fig 2 SS 3 take the stock receiver bolt unit with a hand with the other hand using the cocking lever bring the bolt into open position until locked fig 3 the cross bolt button is set in the fire posi tion WARNING should the bolt fail to engage move the cartridge drop lever as arrowed and repeat the operation fig 4 During this operation the bolt group should be completely assembled and placed in the receiver in open position backward 4 take the barrel breech unit place the barrel on the magazine tube and slide it down toward the receiver fig 5 5 insert the breech extension on the receiver ensuring that the magazine tube enters the opening of the barrel guide ring fig 6 6 position the twin forearms together fig 7 and insert them into the retaining band on the rear barrel NOTE inserting the bre
13. mended 54 55 Benelli choke tubes are marked for easy identification Notches on the muzzle end of each tube allow for quick recognition even when the choke tube is installed in the shotgun NOTCHES Il III II CHOKE Full Improved Modified Modified Improved Cylinder Skeet SYMBOL X XX XXX XXXX XXXXX A NOTCHES B SYMBOL STEEL SHOT NO NO OK OK OK Three round limiter Before attempting any work on your M4 make sure that the cham ber and the magazine of your shotgun are unloaded See the instructions on loading and unloading on pages 8 13 WARNING The magazine spring must be captured by hand when disassembling the gun to prevent the spring from escaping at a high velocity Wear eye protection when disassembling this gun If the magazine spring escape at high velocity severe eye injury or other injuries can occur 36 To install the limiter proceed as follows figs 79 80 1 with the gun unloaded point the barrel upwards and unscrew magazine cap from the front of the weapon using relative pliers remove magazine spring seal ring insert the limiter in the spring 4 insert limiter and spring into the receiver magazine tube install the spring seal ring check for protrusion screw the magazine cap onto the end of the magazine tube and fastening the whole barrel breech fore end unit tightly
14. on the firing pin will appear as described under fig 66 NOTE do not use any tools to insert the firing pin into the bolt carri er use fingers only 10 hold the stock receiver almost horizontally and insert the bolt assembly in its guide on the receiver fig 67 11 insert completely the bolt handle into the bolt group fig 68 WARNING make sure that the link slides over the trigger guard assembly and onto the recoil spring plunger inside the receiver once the bolt assembly is fully mounted fig 69 12 open the bolt fig 70 13 press the cartridge drop lever fig 71 Complete gun reassembly by following procedures listed from point 4 at page 11 Assembly procedure 29 Trouble shooting The gun fails to fire 1 check the safety catch if it is engaged shift the button to the fire position pag 7 2 check that there is a cartridge in the barrel If not insert a cartridge following the loading instructions pag 8 3 check the firing mechanism If necessary clean and lubricate it Magazine cap 1 Especially after the first rounds check that the magazine cap is firmly tightened to keep the barrel against to the receiver The chrome barrel extension must be completely contained by the receiver None of the chromate parts must be visible at the front of the receiver fig 8 Choice of ammunition MA can use 12 ga shells with 70 mm 2 3 4 or 76 mm 3 cases NOTE never use c
15. wers the aperture and point of impact on target Note on the elevation scale on the rear surface of the elevating platform the amount of adjustment made or count the tactile clicks of the screw 32 Internal choke when supplied Before attempting any work on your M4 make sure that the cham ber and the magazine of your shotgun are unloaded See the instructions on loading and unloading on pages 8 13 To change or clean the internal choke proceed as follows 1 unscrew the internal choke using the special choke wrench sup plied with the shotgun and extract it completely from the barrel seat fig 75 2 if the threaded seat of the choke on the barrel is too dirty clean it by spinning round the threaded part of the proper wrench fig 76 NOTE before re using the shotgun make sure that the choke wrench has been removed from the barrel s muzzle 35 3 Reassemble on the barrel seat the kind of choke required taking care to insert the non threaded part inside the barrel before screwing the choke on the barrel s thread fig 77 NOTE the choke correctly mounted must not stick out of the barrel s muzzle 4 Finish the assembly of the choke by screwing it firmly using the choke wrench fig 78 NOTE before re using the shotgun make sure that the choke wrench has been removed from the barrel s muzzle Before the shotgun is put away cleaning the internal choke and rela tive barrel thread is recom

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