M4e1 Superlative Arms Piston Complete Upper Receiver Groups - Piston Upper 18in Ss Barrel 15in Handguard Ss Semi-Only

Aero Precision APAR100218M76: This contract overrun upper receiver is built around the M4E1 Enhanced upper receiver and is powered by a superlative arms gas piston system. This gas system offers a range of adjustments and provides a different operating system that results in less upper receiver fouling than traditional direct impingement systems. This upper receiver includes a VG6 Epsilon 5.56 muzzle device providing a decrease in muzzle rise and recoil. INCLUDES: M4E1 Enhanced Upper Receiver 15\" Enhanced Handguard Dimpled 18\" .223 Wylde CMV Rifle Length Barrel VG6 Epsilon Muzzle Device Superlative Arms Mid-Length Piston System Assembled BCG w/ Superlative Arms Piston Bolt Carrier Aero Precision Ambidextrous Charging Handle M4E1 UPPER FEATURES: Forged from 7075 T6 aluminum Precision machined to M4E1 specs M4 feedramps Matte black hard coat anodized Mil 8625 Type 3 Class 2 Laser engraved T-marks Comes assembled, with port door and forward assist installed Accepts standard AR15/M16 components Handguard mounting platform is forged into the receiver Works with Aero Precision handguards but also fits most BAR-system handguards Barrel nut and wrench are included GEN 2 ENHANCED HANDGUARD FEATURES: 1pc free float design Built in anti-rotation tabs Scalloped rails Continuous top rail 1.78\" inside diameter fits most muzzle devices and 1.5\" suppressors Compatible with low profile gas blocks Quick disconnect sling socket at the 3, 6 and 9 o\'clock positions Additional milling along flats to aid with gripping and add visual appeal New profile for the continuous picatinny top rail 18\" .223 WYLDE RIFLE LENGTH BARREL FEATURES: Chamber: .223 Length: 18\" Twist: 1 in 8 Threading: 1/2\"x28 Material: 416R Stainless Steel Finish: QPQ corrosion resistant finish both inside and out Gas Block Journal: .750 Dimpled Gas Block Journal Gas System Length: Rifle Weight: 40oz M4 Barrel Extension