Laser Devices MBS-AA Borelight Manual
Contents
1. Hiskyor off on fe Tapet vA cam Am he of Fe Gost Maic your offset on The Target vf a cross Am The at he cos oust You sighs windoge and elevation unti he bore ight and acs your sights wndage ar fand eievaton unt he bore ight r is centre le in the center of the target imer t Geriered on ho oto nthe center of ha taget and kesar G Metric Alignment Target G Inch Alignment Target NOTE Depending upon the distance from the end of the barrel to the target that is being used to align the weapon sight the proper alignment point for the weapon sight i e the offset point may be above or below the imaginary straight line drawn through the sight to the target See Figure 3 4 Target at 5 Yards Line of sight through sighting device Laser beam path Bullet path FIGURE 3 4 4 The distance between the point on the target where the laser point projected by the borelight strikes the target and the point on the target to where scope or sighting device needs to be aligned so that a bullet fired from the weapon will strike the aim point at a given range is the Offset Distance See Figure 3 5 Target at 5 Yards Offset distance FIGURE 3 5 15 CHAPTER 3 CALCULATING OFFSET FOR SIGHT ALIGNMENT Sec2. bore rod or a damaged Insert Retainer Screw If the laser point does not move from the Center Point then you may proceed to Section 2 2 Boresighting Procedures Original laser_ alignment point X Optimal position of laser point after rotating borelight by 90 degrees FIGURE 2 6 13 Section 2 3 Alignment of the Borelight with Target 1 Measure the range at which you intend to boresight your weapon 2 Mount the weapon to be aligned on a bench or use sandbags to hold the weapon steady The weapon shall be mounted level or parallel to the floor 3 Activate the borelight by rotating the laser to the ON position Warning Make sure the borelight and weapon are pointed in a safe direction 4 Place the boresight target down range at the distance at which you intend to boresight your weapon This will usually be 10 to 25 yards 5 Adjust the target position until the laser point is directed to the Center Point of the target The Center Point and the target should be at the same height as the borelight 6 Rotate the borelight 90 degrees in a clockwise direction See Figure 2 4 below BORHJ GHT ZROANDAL G MENT TARGET Laser alignment gt A point Mark your offset on the target with a cross Adjust your sight s windage and elevation until aligned with FIGURE 2 4 12 CHAPTER 2 OPERATING INSTRUCTIONS Section 2 1 General This chapter provides directions for the assembly of the borelight and insert
3. direct eye exposure to the laser light projected from this aperture B Switch Assembly The borelight is activated by tightening the Switch Assembly against the Housing C Laser Housing The body of the borelight that contains the battery windage and elevation adjustments and the laser diode D Bore Rod The stainless steel rod used in con junction with the appropriate barrel insert to center the borelight in the barrel The bore rod is supplied in two lengths long for aligning rifles and short for aligning pistols E Insert Retainer Screw This is the metal screw assembly that is used to attach an insert to the bore rod DANGER Never use the borelight without the Insert Retainer Screw F Inserts The plastic parts affixed to the bore rod with the Insert Retainer Screw Each insert is sized to fit a specific caliber of barrel G Alignment Targets Paper targets with metric or U S units used for aligning the sight using the borelight 1 5 PRODUCT SPECIFICATIONS NOTE The borelight should remain on or very close to the center of the target when the unit is rotated in the barrel of the weapon 7 Ifthe laser point moves off of the center point marked on the target check to make sure the borelight was properly inserted into the weapon Also check to make sure that the weapon is not moving slightly as you rotate the borelight If the laser point continues to move off the center point you may have a bent barrel bent
4. a MBS 1A PREALIGNED BORELIGHT USER S MANUAL 5 LasentDevices Manufactured by Laser Devices Inc 2 Harris Court Suite A 4 Monterey CA 93940 U S A Tel 831 373 0701 Fax 831 373 0903 E mail Sales laserdevices com www laserdevices com 4 1 00 Warning Laser Light The MBS 1A borelight when activated emits a laser light that has been determined to pose a risk of eye injury In order to avoid the possibility of injury please adhere to the following warnings Avoid looking directly into the laser beam Do not look directly at the laser light using scopes or binoculars Avoid shining the laser onto mirrored surfaces Do not direct the laser into the eyes or face of persons or animals Observe all safety precautions with the laser that you would observe with a loaded firearm GANGER LASER LIGHT AVOID DIRECT EYE EXPOSURE OUTPUT 5mW WAVELENGTH 632 650nM CLASS Illa LASER PRODUCT WARRANTY INFORMATION Laser Devices Inc LDI offers a one year limited warranty from the date of original purchase against failure due to defect in design parts and workmanship normal wear and tear excluded The warranty does not cover batteries and the plastic alignment inserts The warranty is void if the product serial number has been removed or in the event the product has been misused modified or neglected LDI will replace defective products at its discretion To the maximum extent permitted by l
5. aw LDI disclaims all other warranties whether expressed or implied including but not limited to implied warranties of merchantability and fitness for a particular purpose In no event shall LDI or its suppliers distributors dealers or agents be liable for any damages whatsoever including without limitation damages for personal injury wrongful death or pecuniary loss arising out of the use or the inability to use any LDI manufactured product This limited warranty gives the purchaser specific legal rights which may vary from state to state or jurisdiction to jurisdiction 20 ALWAYS ALWAYS ALWAYS ALWAYS ALWAYS ALWAYS NEVER Rules for Safe Use of the MBS 1A use the factory supplied inserts and insert retaining screw when trueing the MBS 1A in the bore of the weapon turn the device in a clockwise direction when finished boresighting the weapon make sure that the insert and the retainer screw did not become detached in the barrel of the weapon remove the borelight from the weapon as soon as you have finished aligning the sight take your weapon to the range and test fire it to confirm proper sight alignment after using the borelight assume that the sight alignment calculated using the borelight is only an approxima tion of the actual impact point where a bullet will strike the target boresight a loaded gun Rules of Firearms Safety ALWAYS keep the gun pointed in a safe direction ALWAYS kee
6. er Screw See Figure 2 4 below DANGER Failure to properly install the Insert Retainer Screw on the bore rod may result in the insert coming loose and lodging inside the barrel of the weapon amp ef FIGURE 2 4 D Mounting the Borelight into the Weapon Barrel 1 Confirm that the appropriately sized insert is securely attached to the interface rod using the Insert Retainer Screw 2 Grasp the borelight and insert the bore rod into the bore Note A properly sized insert should offer a firm fit If the insert cannot be inserted into the barrel of the weapon with firm pressure then confirm that the appropriately sized insert was installed on the bore rod Likewise if the bore rod slips into the bore without any pressure being applied then the insert may be too small 3 Firmly press the bore rod into the barrel of the weapon until the tapered or cone shaped area of the bore rod contacts the bore WARNING Apply force in a straight line with axis of the barrel to avoid the possibility of bending the bore rod or the Insert Retainer Screw
7. ion of the borelight into the weapon Section 2 2 Assembly and Preparation for Use A Installation of the Battery 1 Unscrew the Laser Housing from the Switch Assembly 2 Install the single 123A lithium battery in the direction shown on the housing Note The negative terminal is inserted into the Laser Housing with the positive terminal facing the Switch Assembly See Figure 2 1 below Battery 123A lt v Battery 3V 123A p l D Switch Assembly ME Housing MBS 1A FIGURE 2 1 3 Reattach the Switch Assembly by tightening the Laser Housing until the laser activates Note While reattaching the Switch Housing make sure that the laser aperture is pointed in a safe direction to avoid any possibility of injury upon activation B Installing the Insert 1 Select the appropriate insert for the weapon to be aligned 2 Slip the appropriately sized insert onto the Insert Retainer Screw The widest end of the insert is slipped onto the Insert Retainer Screw first See Figure 2 2 below 3 Install the Insert Retainer Screw by threading it into the hole bored in the shaft of the bore rod Warning Make sure not to cross thread the Insert Retainer Screw Insert Retainer 223 Cal Insert rg Screw Wide End of m Wiss 45 Cal Insert FIGURE 2 2 4 Once the Insert Retainer Screw is seated against the bore rod use a cartridge case coin screwdriver or knife blade to lightly tighten the Insert Retain
8. justment of a sight Conditions or procedures that must be observed to avoid damage to equipment or risk of injury to persons The point on the target where the bullet will hit if the sight has been properly adjusted 5 Assuming that you will boresight the 308 Cal rifle firing the bullet described in the table at 50 yards the offset point to be marked on the boresight target is calculated as follows a add the True Bullet Drop of 49 inches and b the Expected Trajectory Height above the line of sight at 50 meters from the ballistics table for the range at which you want to align your weapon sight This height according to the ballistics table is 1 56 inches See Figure 3 7 amp 3 8 Total Offset Distance 2 05 Sight to be zeroed for accuracy at 300 yards Target at 50 Yards Offset distance Laser beam path from borelight__ FIGURE 3 7 Close up of target at 50 yards Each Square Equals 2 inch _Line of sight through open sight Laser beam a e path from borelight 0 48 true bullet drop 50 yards Bullet path ai p _1 5 est trajectory See height over line ee of sight 50 yards FIGURE 3 8 17 Section 3 2 Calculating the Offset Distance NOTE Calculating the offset requires access to a complete ballistics table or better yet a ballistics calculator In the alternative you may want to check out the offset calculator available on the Internet at http wilson simplenet c
9. om shareware borescope index html Remember any offset point derived using a ballis tics table or a ballistics calculator should be con sidered an approximation of the actual aim point 1 Measure or calculate the distance between the center of the bore and the center of the sight For example if you are using an iron sight then this distance will be the distance from the center of the bore to the top of the front post A common offset distance is 1 5 inches See Figure 3 6 Sight om FIGURE 3 6 2 Calculate the distance between the boresight target and end of the weapon barrel This distance is usually not less than 10 yards and may be as great as 50 100 yards depending upon the scope to be aligned and the visibility of the laser point 3 Determine the distance to which you want to align your weapon sight This distance for ex ample may be 200 yards or 300 yards 4 Use a ballistics table or a ballistics calculator for the cartridge being used and determine the actual bullet drop over the distance at which you want to align your weapon sight For example the ballistics table may indicate that a 308 Cal Hollow Point Boat Tail Match King Sierra bullet will drop 19 75 over 300 yards See sample table below SECTION 1 3 EQUIPMENT CHARACTERIS TICS AND FEATURES A Characteristics of the Laser Borelight The borelight operates by projecting a laser light from the bore of the weapon to a target located at a kno
10. p your finger off the trigger until ready to shoot ALWAYS keep the gun unloaded until ready to use ALWAYS be sure the gun is safe to operate and the barrel is clear of any obstruction ALWAYS use the proper factory made ammunition for your particular gun ALWAYS know your target and what is beyond it ALWAYS wear eye and ear protection when shooting ALWAYS store guns and ammunition in separate locked containers so they are secure and not accessible to children or unauthorized persons ALWAYS treat every gun as if it were loaded NEVER use alcohol or drugs before or during handling a gun CHAPTER 4 TROUBLESHOOTING Section 4 1 Unit Fails to Operate 1 Fails to operate a Replace the battery see instructions b Check the battery installation to make sure the batteries were installed with the positive terminal facing out 2 Laser light is weak or dim a Replace the battery see instructions b Check the front cap and lens of the laser to make sure that it is not covered with dirt If the front cap is dirty clean gently with a cotton swab or soft clean cloth taking care not to scratch the lens 3 If the borelight still fails to operate please contact the manufacturer for assistance See Service and Repair Section 4 2 Section 4 2 Service and Repair The borelight produt is manufactured to provide years of rugged and dependable use In the event the borelight ever needs to be repaired please contact La
11. pay special attention to items in bold text addressing WARNINGS and possible DANGERS associated with the improper use of the borelight product PRODUCT DESCRIPTION The MBS 1A is a precision laser instrument used to provide a quick check for the alignment of optical scopes open sights and laser aiming devices This manual contains instructions relating to the operation maintenance and troubleshooting of the MBS 1A 1 1 GENERAL INFORMATION A Model Number and Equipment Name Laser Borelight Model MBS 1A B Contact Information for the Manufacturer Laser Devices Inc 2 Harris Court Suite A 4 Monterey CA 93940 U S A Tel 831 373 0701 Fax 831 373 0903 E mail Sales laserdevices com www laserdevices com SECTION 1 2 GLOSSARY Aiming Point Axis of the Barrel Bore Bore Rod Danger Elevation Insert Insert Retainer Screw Windage Warning Zero Point The exact point on the target that you wish to hit A straight line from the center of the weapon barrel to the target The inside of the weapon barrel A part of the borelight that fits into the bore of the weapon Conditions or procedures that must be observed to avoid the risk of serious injury or death Vertical up down movement of a sight The plastic part used to con figure the borelight for aligning different calibers of weapons The screw part used to attach the insert to the bore rod Horizontal left right movement ad
12. ser Devices Inc directly for a return authorization number Once you obtain the return authorization number package the product securely and return it postage paid to LDI In the event the product is not covered by the warranty you will be notified as to the nature and the cost of the necessary repair LASER DEVICES INC 2 Harris Court Suite A 4 Monterey CA 93940 U S A Tel 831 373 0701 Fax 831 373 0903 Internet www laserdevices com 19 6 Mark the OFFSET DISTANCE below the center point marked on the target 7 Adjust your weapon sight to the OFFSET POINT you have marked on the target 8 Take your weapon to the range and test fire it to confirm the alignment of the sight DANGER Ballistics tables may be wrong Errors may have crept into the published data In addition it should be kept in mind that ballistic performance is dependent on the characteristics of each barrel air temperature humidity elevation and a variety of other factors In addition a very small misalignment of the borelight may move the actual impact point several inches As such the offset point derived herein should always be considered an approximation Hence the trajectories provided herein and the information presented by any other source should be considered at best an approximation CHAPTER 1 INTRODUCTION USAGE Please read this instruction manual before you attempt to use the MBS 1A borelight While reading the manual
13. tion 3 1 General Principles 1 The borelight when properly aligned in the weapon barrel projects a laser point on the target that is in line with the axis of the barrel In other words the laser light travels in a straight line from the barrel of the weapon to the target See Figure 3 1 below Target at 50 Yards __Laser beam path from borelight FIGURE 3 1 2 A bullet when fired from a weapon held parallel with the ground immediately starts to drop as soon as it leaves the barrel The actual rate of drop is determined in part by the velocity of the bullet Thus the path of the bullet will always be below the straight line of laser light projected from the borelight See Figure 3 2 Target at 50 Yards __Laser beam path ri from borelight Bullet drop distance Bullet path FIGURE 3 2 3 The optical scope or weapon sight is used to cant the barrel in an upward direction so that a bullet fired from the gun will trace an arc to the target An imaginary straight line drawn through a properly aligned weapon sight attached to a weapon will trace a descending line that crosses the straight line from the bore of the weapon to the target See Figure 3 3 Line of sight through open sight Target at 50 Yards Laser beam path from borelight 4 m m m o n n n Paul path FIGURE 3 3 14 SECTION 1 4 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS A Laser Aperture The point where the laser light is emitted Avoid
14. wn distance from the barrel of the weapon usually 10 to 50 yards B Features e Battery powered using a standard 3 volt lithium 123A battery e Easy twist on and twist off activation e Can be used in cold weather to 10 C or O F e Withstands high temperatures to 50 C or 123 F e May be stored without batteries at temperatures between 40 C and 80 C e Can be used at high altitudes to 10 000 feet e Waterproof to 30 feet e Offers an estimated 7 500 alignment activations before mean failure not including batteries and inserts e Laser prealigned by the manufacturer for accuracy SECTION 1 4 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS A Laser Aperture Avoid Eye a Top View i 123A ae 3v 1 ae C Laser Housing MBS 1A ta Switch Assembly D Boresight Rod Interface Rifle D Boresight Rod Interface Pistol Part OID lt E Insert Retainer Screw Only F2949 M lt lt F insert 22 CAL 223 5 56mm F2964 NE 4 F Insert 223 CAL 5 56mm OVERSIZE F3170 L lt Finsert 270 CAL 7mm F2965 iD FF Insert 30 CAL 30 06 308 CAL 7 62mm F2966 O lt Finsert s8 CAL 357 CAL omm F2967 0 4 F Insert 40 CAL 10mm F2969 Mo 4 F Insert 44 CAL 45 CAL F2970 DE 4 F Insert 50 CAL F2974 OPTIONAL Ss Metal Spring Insert 22 223 5 56mm FA 03167 Figure 1 2 BORELGHT ZROANDALG MENT TARGET BORE GHT ZROANDALIG MENT TARGET
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