CMMG BANSHEE AR-15 5" CM 5.7x28 Upper Receiver w/ EML4 4" M-LOK Handguard

With the ever-growing popularity of 5.7x28mm ammunition, the CMMGA(R) BANSHEE AR-15 5" CM 5.7x28 Upper Receiver w/ EML4(TM) 4" M-LOKA(R) Handguard is the perfect choice for any AR-15 pistol build. Designed to work with CMMG Mk57(TM) or standard AR-15 lowers (when used with 5.7 AR conversion mags), this upper receiver group features the Radial Delayed Blowback(TM) operating system for softer recoil impulse and reduced bolt weight compared to traditional straight blowback systems. This upper receiver group boasts a 5" 5.7x28mm barrel constructed with 4140 Chrome Moly steel and a corrosion-resistant salt bath nitride finish for long-lasting field use at the range or during self-defense. This pistol barrel also features a 1:9 twist and 1/2x28 thread pitch for your favorite muzzle devices along with an MT barrel contour. If that's not enough, this barrel comes with a CMMG ZEROEDA(R) Linear Compensator already mounted right out of the box. The upper receiver is constructed from billet 6061-T6 aluminum with a corrosion-resistant Cerakote finish. This upper receiver features a ZEROED Polymer Dust Cover and a continuous Picatinny top rail. Rounding out this upper receiver group is the EML4 M-LOK 4" handguard. This handguard features M-LOK slots at 3, 6, and 9 o'clock positions as well as a full-length Picatinny top rail on top to maximize space for your favorite weapon-mounted accessories like weapon lights or laser sights. This handguard is also constructed from aircraft 6061-T6 aluminum with a corrosion-resistant Cerakote finish. Includes 5" 5.7x28mm barrel, upper receiver with ZEROED Polymer Dust Cover, EML4 M-LOK 4" handguard, ZEROED Linear Compensator, ZEROED Ambidextrous Charging Handle, and bolt carrier group. Product comes assembled. Backed by CMMG lifetime quality guarantee.