| Gas Piston systems operate cleaner then the direct gas impingement
operating systems. With the piston system, the propellant gases that
are being diverted at the gas block are now vented at the gas block,
instead in the operating system of the upper receiver. Since the
fouling from the gas system is not being vented in to the action of
your firearm, it stays cooler and cleaner. The CMMG system is designed
around the short stroke piston operation. The piston pushes the anti
tilt one piece carrier, which unlocks the bolt and allows the piston to
return home while the bolt carrier continues to cycle independently.
The upper is built off of a CMMG standard forged A3 receiver with M4 feed
ramps. The chrome plated gas piston is mounted in a solid one piece
steel gas block attached to the barrel by pins. The dedicated, piston
specific, anti-tilt bolt carrier is one piece, machined with the piston
impingement key(not a bolt on). The carrier uses standard Mil-Spec
bolt. The barrel is our 4140 steel, M4 profile, 5.56mm chamber and
bore, 1/9 twist ratio and 1/2x28 threaded barrel with CMMG proprietary
WASP surface treatment. The upper is finished with M4 handguard caps,
M4 handguards and an A2 flash hider installed with a crush washer. Includes charging handle.
The piston gas block has a gas shut off setting for use with a
suppressor to allow for maximum noise reduction. You must replace the
crush washer with a peel washer if you plan to mount your suppressor on
the original flash hider.
Fits most all commercial and mil-spec lower receivers in 5.56 (.223 Rem)
* RESTRICTED ITEM - Adult signature required on delivery. Does not ship to CA, CT, MA, MY, NJ
NO EXPORT
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