7274S-EN
TABLE OF CONTENTS READ FIRST PAGE PAGE INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 FUNCTION TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 NOTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 AMMUNITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 FILLING THE MAGAZINE . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION For your safety and for the safety of others, whether you are an experienced shooter or have never handled a firearm before, we urge you to read this entire instruction manual before handling the firearm. Shooting firearms is a privilege and a major responsibility. Improper use can have lethal and irreparable consequences. Please take this responsibility seriously.
BEFORE USING THIS FIREARM, READ AND FOLLOW THESE INSTRUCTIONS WARNINGS • CARELESS OR IMPROPER HANDLING COULD RESULT IN UNINTENTIONAL DISCHARGE, WHICH COULD CAUSE DEATH, INJURY, OR DAMAGE TO PROPERTY. • WHEN YOU SQUEEZE THE TRIGGER, EXPECT THE GUN TO FIRE. YOU MUST TAKE FULL RESPONSIBILITY FOR FIRING IT. YOUR CARE CAN AVOID ACCIDENTAL DISCHARGE AND YOU WILL THEREBY AVOID ACCIDENTAL DEATH OR INJURY.
PRECAUTIONS WHEN HANDLING THIS FIREARM [cont] REMOVE WATER FROM THE BARREL AS FOLLOWS: • Remove the muzzle cap (if applicable). • Pull the charging handle rearward 5 to 8 cm and allow the water to drain. • Point the muzzle down and shake firearm vigorously. • • • • If necessary, use thumb pressure on the forward assist to seat the round in the chamber. If the cartridge still will not chamber, thoroughly the check bore, chamber and cartridge.
CAUTIONS CAREFULLY READ THIS INSTRUCTION MANUAL PRIOR TO LOADING AND FIRING. IT GIVES BASIC ADVICE ON THE PROPER HANDLING AND FUNCTIONING OF THIS COLT CANADA FIREARM. Your safety, and the safety of others (including your family) depends on your mature compliance with this advice, and your adoption, development and constant employment of safe practices.
SAFE HANDLING OF FIREARMS • • • • • • • • • • ALWAYS treat every firearm as if it were loaded. ALWAYS check to ensure the firearm is NOT loaded: IMMEDIATELY after picking it up. ALWAYS check to ensure that the firearm is NOT loaded before giving it to another person. IMMEDIATELY check to make sure that the firearm is NOT loaded when receiving it from another person. NEVER rely on the firearm’s safety mechanism.
LOADING OF FIREARMS • • • • ONLY load a firearm at the destination where you intend to shoot. ALWAYS use the proper ammunition for your particular firearm. NEVER chamber a round until ready to shoot. NEVER leave a loaded firearm unattended. SAFE SHOOTING OF FIREARMS • • • • • ALWAYS wear appropriate ear and eye protection when shooting or observing. ALWAYS make sure that the target and the area surrounding the target are safe before shooting.
SAFE STORAGE OF FIREARMS • • ALWAYS make sure your firearm is NOT loaded before storing. ALWAYS store firearms and ammunition in separately secured locations, so that children and untrained adults cannot gain access to them.
DIEMACO MRR Semi-Automatic Modular Rail Rifle Overview Diemaco, lightweight, semi-automatic, Modular Rail Rifle (MRR) firearms feature a muzzle compensator, free floating cold hammer forged barrel, and multi-position Magpul MOE buttstock and pistol grip. Firearm configurations include models with 18.6 inch, 16 inch, and 11.6 inch barrel lengths. Both the 16 inch and 11.6 inch configurations utilize Canadian Forces specification chrome lined barrels for increased longevity while the 18.
Safety Features • Trigger Guard: The trigger guard protects the trigger from accidental discharges. The guard may be opened when using heavy gloves, however extra care must be taken when the guard has been opened. • Fire Control Selector: The fire control selector has two positions. • When the selector is set to [S], for SAFE: the firearm cannot be fired. The firearm can only be placed on Safe when the trigger mechanism is cocked.
NOTE Use of the charging handle will cock the action. NOTE While holding the charging handle to the rear, the bolt carrier group can be locked to the rear by depressing the bottom of the bolt catch [6]. The charging handle can then be returned fully forward. This may be desirable for inspection during range procedures. Be sure to set the fire control selector [5] to [S] once locked open. • • Look in through the ejection port and check to ensure that the receiver and chamber are clear.
Location of Controls Figure 2 1. 2. 3. 4. 5. 6. 7. Compensator Barrel Sling Loop Forward Assist Rail Adapter Charging Handle Take-down Pin 8. 9. 10. 11. 12. 13. 14. Cartridge Deflector Magazine Release Ejection Port and Cover Pivot Pin Magazine Well Bolt Catch Trigger Guard 15. 16. 17. 18. 19. 20. 21.
Function of the Diemaco MRR Your Diemaco firearm has a semi-automatic action with the following operation. With a loaded magazine inserted and the fire control selector set to [R], the charging handle is used to cock the action and chamber a round. When the trigger is squeezed, the trigger rotates, disengaging the trigger sear surface from the hammer. The hammer spring drives the hammer forward to strike the firing pin.
Function of the Diemaco MRR [cont] As the cartridge seats in the chamber, the extractor snaps over the rim of the cartridge case. Forward motion of the bolt stops, and the bolt locks into the barrel extension, under influence of the carrier cam, as the carrier rides forward over the bolt. When the trigger is released, the disconnect is rotated back to the point of releasing the hammer while the trigger sear surface rotates in front of the hammer notch.
Ammunition Diemaco Rifles and Carbines can come in various can be chambered in various ammunition sizing. The chambering information for your rifle or carbine can be found on the top muzzle end of the barrel. See Figure 4. DANGER ! NEVER USE ANYTHING BUT ORIGINAL HIGH QUALITY COMMERCIALLY MANUFACTURED AMMUNITION FOR WHICH THE FIREARM IS CHAMBERED. THE USE OF INCORRECT CALIBRE OR HIGH PRESSURED HANDLOADS CAN RESULT IN DAMAGE TO THE FIREARM AND SEVERE PERSONAL INJURY.
Filling the Magazine To fill the magazine, use the following procedure, (see Figure 5): NOTE • • • • Use only ammunition for which your firearm is chambered. Orient the front of magazine forward. Place a round with the bullet oriented forward between the lips of the magazine. Press the round down until it is retained by the magazine lips. Place the next round on top of the last and repeat until desired number is loaded.
Loading the Firearm [See Figure 1 pg. 10] • • • • • • If necessary, press the magazine release [1] and remove the empty magazine. With the magazine [2] oriented forward, Push the magazine into the magazine well until it engages with a positive “Click”. Tug on the magazine to check engagement with the magazine catch. If the bolt carrier group is locked to the rear, proceed as follows: Depress the bolt catch [6].
Loading the Firearm [cont] WARNING • NEVER LEAVE YOUR FIREARM COCKED AND LOADED WITHOUT THE SELECTOR IN THE “S” POSITION. THE FIREARM COULD EASILY BE FIRED OR DISCHARGE CAUSING DEATH, INJURY OR DAMAGE TO PROPERTY. Close the ejection port if you wish. This will open automatically after the first round is fired. Unloading the Firearm [See Figure 1 pg. 10] • • • • • • • • Ensure that the fire control selector [5] is set to [S]. Depress the magazine release [1] and remove the magazine [2].
Firing Your Diemaco MRR [cont] WARNING PRACTICE THE FUNCTION OF YOUR FIREARM, STANCE, AIMING, AND BREATHING WITH THE FIREARM UNLOADED BEFORE USING YOUR FIREARM LOADED. ALWAYS WEAR HEARING AND EYE PROTECTION DURING FIRING. KEEP YOUR FIREARM POINTED IN A SAFE DIRECTION. CAUTIONS KEEP FINGERS AWAY FROM THE TRIGGER UNLESS FIRING. KEEP FINGERS AWAY FROM THE EJECTION PORT.
Firing Your Diemaco MRR [cont] • When the magazine is empty, the bolt will stay in the open or rear position. Return the fire control selector to [S] and follow the loading or unloading procedures. Live-Fire Troubleshooting If, during firing, you encounter an issue with the firearm’s operation, refer to the following troubleshooting procedures.
Live-fire Troubleshooting [cont] IMMEDIATE ACTION Should you notice a change in sound or recoil, the immediate action is as follows: • Set the fire control selector to [S]. • Remove the magazine. • Continue to prove the firearm safe and lock the bolt carrier group to the rear using the bolt catch. • Check for unburnt propellant or a bullet lodged in the bore. • If there is no bore obstruction, clean out any unburnt propellant. • Re-load, re-aim, and resume firing.
Live-fire Troubleshooting [cont] CORRECTIVE ACTIONS If the bolt carrier group is to the rear, proceed as follows: • Set the fire control selector to [S]; • Check to see if the magazine is empty; • Reload; • Operate the bolt catch; • Re-aim; and • Continue firing. If the bolt carrier group is fully forward: • Wait 30 seconds while maintaining muzzle control in a safe direction, in case of a hang fire (slow ignition). If a round does not fire in that time, it is unlikely to.
NOTE • • • • Check the magazine to ensure that it is fully seated and locked in place. Pull the charging handle all the way back and watch for the ejection of a round, or an empty casing. If a round or empty casing is ejected, release the charging handle to feed a new round, re-aim and continue firing. If no empty casing or round is ejected, release the charging handle and attempt to continue firing.
Field Stripping [See Figure 6] WHILE THE UPPER AND LOWER RECEIVER ASSEMBLIES ARE SEPARATED, NEVER CAUTION PULL THE TRIGGER WITHOUT CONTROLLING THE HAMMER. THIS CAN CAUSE SERIOUS DAMAGE TO YOUR FIREARM. • • • • • Prove the firearm safe and leave the action cocked, with the bolt carrier group forward. Set the fire control selector to [S]. Push the takedown pin [1] all the way to the right until it clicks and then pivot the upper receiver group [2] upward.
FIELD STRIPPING [cont] [See Figure 7] • • • • • Withdraw the firing pin retaining pin [5] on the carrier. Remove the firing pin [6]. When viewed from the face, rotate the bolt [7] clockwise into the locked position to expose the cam pin. Rotate the cam pin [8] 1/4 turn and remove it. Remove the bolt from the carrier [9].
Additional Stripping [Refer to Figure 8 & 9 pgs. 25 & 26] • • Figure 8 • • • • Using a suitable punch, remove the extractor pin [1]. Remove the extractor and spring as an assembly: DO NOT separate the spring from the extractor and DO NOT remove the elastomeric insert (black rubber) from inside the extractor spring. Ensure that the “D-ring” elastomer [2] is present in the spring group. Push the receiver pivot pin [3] all the way to the right. Separate the upper and lower receivers.
ADDITIONAL STRIPPING [cont] • If necessary for cleaning, remove the elastomeric insert from the receiver [7]. NOTE The instructions found under Field Stripping and Additional Stripping are to be performed for the purpose of proper care and cleaning. Any further disassembly should only be performed by a qualified gunsmith to avoid the risk of damage to the firearm or loss of parts.
Sliding Buttstock [See Figure 10] ADJUSTMENT To collapse or extend the buttstock, depress the adjustment lever [1] and slide the stock forward or rearward. The buttstock has intermediate positions for the comfort of the shooter. REMOVAL To remove the sliding buttstock, pull down on the release pin [2] forward of the adjustment lever, and slide the buttstock off of the receiver extension.
Sights – Aiming and Zeroing Please refer to the documentation that came with your sights for care and zeroing procedures. AIMING TIPS • Relax, hold steady, and keep the firearm level: DO NOT tilt the firearm sideways. • Keep the tip of front sight in the centre of the rear aperture sight. Focus on the tip of the front sight, not on the target.
Operating – Arctic Conditions [See Figure 11] When operating in Arctic or Cold conditions, the trigger guard may be opened to obtain easier access to the trigger while wearing thick or arctic mittens or gloves. • • To open the trigger guard: Depress the trigger guard plunger and rotate the guard downward against the pistol grip. To close the trigger guard: Depress the trigger guard plunger and rotate the guard back into place.
Care and Cleaning NORMAL CONDITIONS • Clean and lubricate with a quality cleaner/lubricant/preservative. DUSTY AND SANDY CONDITIONS • Clean the firearm more frequently, at least once a day, and keep the firearm covered when possible. • Reduce lubrication to a minimum, especially on sliding surfaces. TROPICAL CONDITIONS • Inspect, strip, clean, and lubricate the firearm more frequently: at least once a day.
Detailed Cleaning Techniques EQUIPMENT AND MATERIALS Cleaning rod or pull-through, cotton flannel patches, small toothbrush, quality gun cleaning solution, Cleaner/Lubricant/Preservative (CLP), a bronze wire bore brush and a bronze wire chamber brush. WHEN TO CLEAN Before Firing: Check to ensure that the barrel and chamber are clean and remove any CLP present in the barrel. After Firing: Clean your firearm as soon as possible: the job will be easier and there will be less opportunity for corrosion to begin.
Detailed Cleaning Techniques [cont] CAUTION • Use a pull through or cleaning rod with an appropriate size bore brush beginning from the chamber down to and out of the muzzle. The bore brush will follow the rifling in the barrel. Repeat as required. DO NOT change direction while the brush is in the barrel as the brush could become stuck and/or damaged. NOTE • • ENSURE THAT THE FIREARM IS NOT LOADED.
Detailed Cleaning Techniques [cont] NOTE • • Colt Canada does not recommend removal of the Ejector. Instead follow these techniques. Apply 2 or 3 drops CLP or oil to the ejector and depress the ejector in and out. Dry excess oil. UPPER RECEIVER • Use an oiled bore brush to gently clean around the ends of the gas tube. NOTE • • • Take care to ensure that you DO NOT forcefully deflect the gas tube while cleaning as this could cause premature wear or damage.
Detailed Cleaning Techniques [cont] • • Apply CLP or oil to the trigger mechanism, selector, magazine catch, pivot and takedown pins, detents, and buttstock lever. Clean and lightly apply CLP or oil to the inside of the buffer tube, buffer, and buffer spring. COMPLETION OF CLEANING PROCEDURES • Wipe all components clean and dry, and inspect for excessive wear, corrosion, or mechanical damage. If any are discovered, have them corrected before firing again. • Re-assemble the firearm.
TROUBLE SHOOTING PROBLEM COMMON CAUSE CORRECTIVE ACTION Firearm fails to fire - Fire control lever on [S] - Move lever to [R] - Improper assembly of firing pin - Assemble correctly (retaining pin goes to the rear of the large shoulder of the firing pin) - Bolt unlocked - Check chamber, barrel, locking lugs and ammunition - Excessive amount of oil in firing pin hole - Clean with pipe cleaner - Defective ammunition - Remove and discard - Too much carbon on firing pin or in firing pin hole - Cle
TROUBLE SHOOTING [cont] PROBLEM COMMON CAUSE CORRECTIVE ACTION Failure to feed - Dirty or corroded ammunition - Clean or discard - Dirty magazine - Clean - Defective magazine - Replace - Too many rounds in the magazine - Remove the excess ammunition - Movement of buffer spring is restricted - Disassemble and clean the buffer and return Double feed - Defective magazine - Replace Round will not chamber - Defective magazine - Replace Bolt will not lock - Dirty or corroded ammunition - Cle
TROUBLE SHOOTING [cont] PROBLEM COMMON CAUSE CORRECTIVE ACTION Failure to eject - Dirt, corrosion or carbon buildup in the barrel locking lugs - Clean - Faulty magazine - Replace - Refer to Firearms Technician - Broken ejector spring - Movement of the buffer is restricted - Remove and clean (before assembling the bolt to the carrier, ensure that the gas tube fits into the carrier key and that the carrier moves freely within the upper receiver) - Gaps in the bolt rings not staggered - Stagger the
TROUBLE SHOOTING [cont] PROBLEM COMMON CAUSE Bolt fails to lock after - Dirty or corroded bolt latch the last round has fired Fire control selector binds Misfire 36 17274S-EN CORRECTIVE ACTION - Clean - Faulty magazine - Replace - Dirt in the barrel extension - Clean - The selector is dry - Lubricate - Dirt or sand under the trigger - Clean - Faulty ammunition - Replace - Faulty firing mechanism.
NOTES
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FIREARM RECORD Model Serial No.
PART NO. 17274S-EN ALL QUESTIONS OR CONCERNS REGARDING YOUR PRODUCT OR THIS MANUAL CAN BE MADE TO: PRODUCT SUPPORT ENGINEERING - TECHNICAL PUBLICATIONS COLT CANADA CORPORATION 1036 Wilson Avenue, Kitchener, Ontario CANADA, N2C 1J3 Tel: 519-893-6840 Email: info@coltcanada.com W W W. C O LT C A N A D A . C O M 2018-07-31 © 2018 COLT CANADA CORPORATION. ALL RIGHTS RESERVED.
