cleaning your chamber & barrel
A shorter barrel expels a significant amount of unburnt powder, more than a standard AR15. Excess unburnt powder (fouling) can cause cycling and reliability issues. Which is why it is imperative that you thoroughly clean your gun, especially during the break-in period (After the first 30 rds. and after the first 200 rds.). Without cleaning there is no room for the cartridge to go with the unburnt gunpowder build up along the chamber walls; the gun will certainly jam.
*Please remember to clear the chamber, as well as to disassemble and disable your firearm before cleaning.
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STEP 1:
GO WITH the BULLET! Clean the chamber and barrel from rear to front. Use a chamber brush to push unburnt powder and debris out of the front of the barrel. Use an alcohol based solvent to loosen the unburnt powder.
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step 2:
After cleaning, for safe storage of your firearm, oil the inside of the chamber and barrel to prevent oxidation. When you are ready to go to the range simply push a cleaning patch through the barrel to remove the oil. This will help stop the oil from collecting and creating the sludge of unburnt gun powder inside the barrel.
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CLEANING TOOLS
Use a chamber brush along with standard cleaning patches during your cleaning procedure. This brush is the only tool that will remove the yellow build up effectively as the copper bristles are strong enough to remove the gunpowder residue, but soft enough to not damage the chamber. They are readily available at any firearm retailer and amazon.