While tactical carbines are great for competition and precision applications, building a retro AR-15 is pure nostalgia and a must have in any collection. This high quality 5.56 NATO upper is manufactured by Spike's Tactical for those looking to build an old school rifle capable of serious high-volume use. Its 16" cold hammer forged barrel features a chrome lining, 1:7 twist rate, and 1/2x28 threaded muzzle with A2 flash hider. Unlike other inferior options, Spike's chose a mil-spec phosphate finish and claims the bore has an impressive service life of 20,000+ rounds. Every upper is assembled with a forged receiver, mil-spec charging handle, and phosphate coated bolt carrier group. Each BCG also undergoes magnetic particle inspection and high pressure testing to ensure its integrity. This upper was designed with a mid-length gas system to promote optimal cycling and smoother recoil by not over gassing the system. Last but certainly not least, the A2 front sight gas block and two-piece M4 handguards are the final touches to achieve the retro AR aesthetics. Spike's 5.56 upper is the perfect addition to your classic AR build and will serve you well for years to come.

Features and Specifications:
Manufacturer Number: STU5435-MLS
Spike's Tactical AR-15 Upper
Complete w/Bolt Carrier Group & Charging Handle
Barrel: 16" Chrome Lined
Caliber: 5.56 NATO
Twist Rate: 1:7
Barrel Material: Cold Hammer Forged 21CrM0V511
Barrel Finish: Mil-Spec Phosphate
Service Life: 20,000+ Rounds
Muzzle: Threaded 1/2x28 w/A2 Flash Hider
Barrel Extension: M4 Feed Ramps
Gas System: Mid-Length w/.750 A2 Front Sight Gas Block
Receiver Style: Forged
Bolt Carrier Group: Phosphate Coated, High Pressure Tested, & Magnetic Particle Inspected
Charging Handle: Forged Mil-Spec
Handguard: Two Piece M4
Color: Black