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Inspection, Cleaning, and Lubrication

Disassembly Of Firearm…

  • Make sure firearm is not loaded and is pointed in a safe direction.
  • Remove magazine and clear the chamber
  • Open the bolt by pulling the charging handle completely to the rear while holding the charging handle in this position, use your other hand to lock the bolt in the rearward position by pushing the lower end of the bolt catch lever.
  • The bolt carrier should lock in the rearward position. Let go of the charging handle. Do not ride it back!
  • If there was a round in the chamber it should have been ejected...make sure there is not a round in the chamber by LOOKING INTO THE CHAMBER from THE EJECTION PORT AND VISUALLY CONFIRMING THAT THERE IS NOT A ROUND IN THE CHAMBER!
  • Now that you are sure the gun is unloaded you may proceed in the disassembly.
  • Send the Bolt "Home" by releasing the Bolt Catch.
  • Remove the butt stock on the rifle by rotating the takedown lever 160° counter - clockwise. Grasp the rifle and stock in opposite hands and firmly pull stock directly rearward. Do not attempt to fire the rifle with stock removed. To do so is unsafe and could cause bodily injury. Next remove the buffer spring and buffer assembly by unscrewing the recoil tube on both the rifle and pistol. Use caution the buffer spring will be under pressure.
  • By using a small diameter drive tool, push both takedown pins from left to right until they stop.
  • Separate the receivers by holding the grip with one hand and pulling the upper receiver up and forward. Note: The charging handle must be in the closed position; there will be some resistance due to the close tolerance fit between the upper and lower receivers.
  • You may now pull back on the charging handle to remove the bolt carrier assembly.
  • Detach the muzzle compensator by pulling the locking ring forward and remove from barrel with a twisting motion.

 

After firing, clean your rifle as soon as possible to make the job easier, and to avoid the development of any corrosion. When your firearm has not been fired, you should clean it at once or twice a year if you live in a temperate climate, or as often as once a week in a tropical climate. If you get your firearm wet, clean it as soon as possible. Use only high quality kits that include a cleaning rod, swab holder, cotton flannel bore patches, pipe cleaners, a small toothbrush, brass wire bristle bore and chamber brushes, and CLP (Cleaner–Lubricant–Preservative). After disassembling the rifle/pistol, thoroughly clean, inspect and lubricate all parts according to the
techniques described in this manual.

Cleaning:

Clean the Bore…

carbon15_cleaning.png

  • Always clean from chamber to muzzle in the natural direction of the bullet.
  • Attach the three cleaning rod sections together, but leave each one about two turns short of being tight.
  • Attach the bore brush, leaving it two turns short of being tight.
  • Never run a brush down the barrel first or dip the brush in solvent.
  • Swab out the bore with a patch moistened with “CLP”.
  • Point muzzle down. Hold the upper receiver in one hand while inserting the end of the rod without the brush into the chamber. Do not let either rub the bore, this will scratch the bore. About the 2 - 3 inches of the rod should protrude out of the muzzle end.
    carbon15_diagram1.png
  • Attach the handle section of the cleaning rod to the threaded end that is sticking out of the muzzle. Diagram #1
  • Pull the brush through the bore and out the muzzle. You should be able to see the rod twisting as you pull it. This is the brush “tracking” in the rifling. Never reverse the brush in the chamber.
  • After one pull, take the handle section off , and repeat the process.
  • After three or four pulls, the three rod sections and the bore brush may become screwed tightly together. Loosen them up and repeat the process.
  • Send a patch through the bore occasionally to help clean out the debris the brush has loosened. Just replace the bore brush with the rod tip (patch holder) and a wet patch. Pull it through. If you leave the rods loose again the patch will “track” in the rifling as before. But remember, always have the bore wet with cleaner before trying to pull a brush through.

Disassembly of Bolt Carrier Assembly…

  • Clean the bolt carrier assembly and components in a suitable cleaning solvent and remove any built-up carbon from the bolt.
  • Clean the rifle using a commercially available gun cleaner (WD-40 works well for cleaning exterior surfaces of the receivers.) Clean bore with bore brush and wipe out with cleaning patch.
  • Re-assembly is reverse of disassembly. Install the bolt into the carrier, install the cam pin (The cam pin will only go into the bolt one way, if the pin will not install rotate the bolt 180° and the pin should slide in freely)
  • Install the firing pin then the firing pin retaining pin. Failure to install this correctly may cause the gun to fire with the bolt open and could cause serious injury.
  • The cam pin and gas rings can be lubed lightly with a light weight oil.
  • When reassembling bolt, stagger the three gas ring gaps 120° apart around the bolt. (This will reduce gas loss).
  1. Push bolt into locked position
    carbon15_push_bolt.png
  2. Remove firing pin retaining pin
    (Never Open or Close the Split End of Firing Pin Retaining Pin)
    carbon15_remove_pin.png
  3. Drop firing pin out of rear of bolt carrier
    carbon15_drop_pin.png
  4. Remove bolt cam pin (Give cam pin a 1⁄4 turn and lift out)
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_remove_bolt.png
  5. Remove bolt assembly from carrier.
    carbon15_remove_bolt_assembly.png
  6. Push extractor pin out
    Note: Press rear of extractor to check spring function. Remove extractor pin by pushing out with a punch, or the tip of a bullet.
    carbon15_push_pin.png
  7. Remove extractor and spring.
    Caution: Extractor spring may pop out and get lost.
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_remove_extractor.png

Bolt assembly should be disassembled only when dirty or damaged. Always replace damaged parts or see a qualified gunsmith. (Steps 6 & 7)

Cleaning the Ejector…

  • The design of the ejector makes its disassembly for cleaning somewhat impractical (i.e., we don’t recommend it!). Make sure your firearm ejects empty cases efficiently by following these steps on a monthly basis (more frequently if firing blanks).
  • Remove the bolt from the carrier as described above. Hold it as shown with the ejector down and the extractor up.
  • Dribble a few drops of CLP around the ejector to form a puddle.
  • Take a fired or dummy case, and place it under the lip of the extractor. With a rocking motion, press the case down against the ejector. Since the ejector is spring loaded, some resistance will be felt. Press on the case until it stops against the bolt face. Ease off with your thumb slightly, and press down again. Repeat several times. Replace the CLP frequently. Once the spring action of the ejector is smooth and strong, dry off any excess.

carbon15_clean_ejector.png

Inspection before lubricating…

  • Check the bolt: Look for cracks or fractures, especially in the cam pin hole area. Bolts with any pitting extending into the firing pin hole should be relaced.
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_bolt.png
  • Check the firing pin: If it is bent, cracked, too sharp, it should be replaced.
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_firing_pin.png
  • Check the firing pin retaining pin: If it is bent or badly worn, it should be replaced. NEVER use a “Cotter Pin” as a substitute for a real firing pin retaining pin. Cotter pins are not made of heat treat spring steel, and their round head shape will cause damage.
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_firing_pin_retaining_pin.png
  • Check the cam pin: If it is cracked, or chipped, it should be replaced.
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_cam_pin.png
  • Check the extractor and extractor spring. If the extractor is chipped, or has broken edges in the area of the lip that engages the cartridge rim, it should be replaced. Check that the rubber insert is inside the extractor spring.
    File:CARBON_15/30_Inspection,_Cleaning,_and_Lubrication/carbon15_extractor.png

Lubrication…

Upper and Lower Receivers:

Lightly Lubricate

  • The inside of the upper receiver, bore and chamber (using cleaning rod and patch).
  • The firing pin with CLP.
  • The charging handle and the inner and outer surfaces of the bolt carrier.

Generously Lubricate

  • All moving parts inside the lower receiver (trigger, hammer, safety, bolt catch, etc), and all its various pins and detents. Don’t forget the takedown, pivot pins, and their detents.
  • The bolt, cam pin area, and bolt gas rings. The carrier key should be dried with a pipe cleaner - and add one drop of CLP. Wipe off fingerprints (they can start the corrosion process) from exterior surfaces with a soft oiled black rag.
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