CMMG AR-15 Mid Length Upper Receiver .223 Rem/5.56 NATO 16" 1:9 Twist Barrel A2 Front Sight WASP Finish 55B2ED9

CMMG, Inc.
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This CMMG Mid Length upper is built from the standard forged A3 receiver with M4 feed ramps. The barrel is 4140 steel, government profile, 5.56mm chamber and bore, 1:9 twist ratio and 1/2x28 threaded barrel and the proprietary WASP surface treatment.

Specifications and Features:
F-marked forged front sight base
Mil-spec certified 4140 chrome-moly vanadium steel barrel
5.56x45 NATO chamber
Mid length gas system
1:9 twist rate
11 degree recessed target crown
WASP treated barrel, including the chamber, bore and under the front sight base
A2 Flash hider installed with crush washer
Mid Length Single heat shield handguard
Forged M4 upper receiver is T marked and has M4 feed ramp cuts
Semi Auto bolt carrier
Mil-spec .250 diameter take-down pins
Each barrel is individually magnetic particle tested.
Barrels are engraved
1:9. Each upper is head spaced and test fired before shipping.