16" 450 BUSHMASTER Complete Upper Assembly for AR15 with 16" 450 BUSHMASTER Satern Heavy Stainless Barrel, 15" Rail and Thread Protector. Includes BCG & Charging Handle.

The straight walled cartridge and 250+ grain projectile of the 450 Bushmaster is effective for big game to 250 meters, especially in states with hunting cartidge restrictions. You will need a .450 Bushmaster specific BCG and magazines, and ours are designed for extreme reliability.

Specifications:

• Barrel: 16 inch 450 BUSHMASTER Heavy 416R Stainless Barrel by Satern Barrels with 1x20 Twist, SOCOM Feed Ramps, and 3/4x24 Threads. The accuracy and precision of Satern barrels is surpassed by no one in the firearms industry.
• Upper: Mil-Spec Upper Receiver machined from 7075 T6 aluminum forging with forward assist and dust cover installed. Hard coat anodized MIL-STD 8625 Type 3 Class 2.
• Rail: 15" Narrow Profile Free Float Rail machined from 6061 T6 aluminum. Comfortable and light weight, with M-LOK or KEYMOD attachment points along the entire length at 3, 6, and 9 positions. Hard coat anodized MIL-STD 8625 Type 3 Class 2.
• Gas System: Mid Length Gas System with 0.875" Low Profile Gas Block.
• Muzzle Device: Thread Protector.
• Bolt Carrier Group: 450 BUSHMASTER Nitride BCG with a 8620 Steel Carrier, 9310 Steel Bolt, and MIM Steel Extractor. Mag Particle Inspected and Pressure Tested.
• Charging Handle: Mil-Spec AR15 Charging Handle