Shaw AR-15 300 HAMR Threaded AR Complete Upper Receiver 16.5in HBar Mid 1-12 Twist Weight 4lb Matte Stainless Barrel/Hard Coat Anodize Black Upp. Shaw is now proud to offer complete uppers directly to consumers. All AR-15 barrels are machined from 416R stainless steel and hybrid MLock/Picatinny provides endless mounting options. Standard features include NiB bolt carrier groups Radian Raptor LT charging handles and threaded muzzles. Specifications for Shaw AR-15 300 HAMR Threaded AR Complete Upper Receiver: Manufacturer: Shaw Caliber: 300 HAM'R Barrel Length: 16.5 in Barrel Profile: HBAR Gas System Length: Mid Length Barrel Twist Rate: 1-12 Firearms Threads Per Inch: 5/8x24 Finish: Anodized Color: Black Fabric/Material: 416R Stainless Steel Gas Block Journal Size-Diameter: .750 in Gun Type: Rifle Gun Make: AR Platform Gun Model: AR-15 Weight: 4 lb Barrel Material: 416R Stainless Steel Condition: New Flutes: No Features of Shaw AR-15 300 HAMR Threaded AR Complete Upper Receiver NiB BCG Superlative Arms Adjustable Gas Block Hybrid M-LOK Handguard Radian Raptor LT Charging Handle Glare Free Matte Finish Mil-Spec Upper Package Contents: Shaw AR-15 300 HAMR Threaded AR Complete Upper Receiver Thread Protector Gas Block Adjustment Tool What firearm models does the manufacturer say Shaw AR-15 300 HAMR Threaded AR Complete Upper Receiver is compatible with? The manufacturer says that Shaw AR-15 300 HAMR Threaded AR Complete Upper Receiver is compatible with AR-15Shaw AR15HBSS16HAMR12-UP: AR-15 300 HAMR Threaded Barrel 16.5in HBar Mid 1-12 Twist Weight 4lb Matte Stainless Barrel/Hard Coat Anodize Black Upp