Aero Precision M4E1 Assembled Upper Receiver 300 Blackout 8" Barrel Black

From Aero Precision, the AR-15 M4E1 .300 Blackout Assembled Upper Receivers. Chambered in 300 Blackout, the upper is finished with black anodizing and available in three lengths, each with different length handguards. This upper does not come with the charging handle or bolt carrier group, allowing the user to personalize their upper receiver even more! The Aero Precision Assembled Upper Receiver also features: M-LOK EM-7 7" for 8" barrel, 9" handguard for 10" barrel, 15" handguard for 16" barrel 8", 10", and 16" carbine length chrome moly barrel Pistol length gas system w/ low profile gas block Standard A2 fl Mfg: Aero Precision