20" 6MM ARC Complete Upper - Satern Stainless Medium Barrel - 15" Rail - Comp Brake - BCG - CH

20" 6MM ARC Complete Upper Assembly for AR15 with 20" 6MM ARC Satern Stainless Medium Barrel, 15" Rail and Competition Muzzle Brake. Includes BCG & Charging Handle.

The 6mm ARC utilizes efficient, high-BC bullets to deliver unprecedented performance from the AR-15 platform. Because the versatile 6mm ARC does much of what larger cartridges can and everything that smaller cartridges can’t, it has been tested, selected and fielded by a specialized group within the U.S. DoD for their multipurpose combat rifle program.

Specifications:

• Barrel: 20 inch 6MM ARC 416R Stainless Medium Barrel by Satern Barrels with 1x7.5 Twist, M4 Feed Ramps, and 5/8x24 Threads. This is a highly accurate, precision machined, match grade barrel.
• 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: Rifle Length Gas System with 0.750" Low Profile Gas Block.
• Muzzle Device: Competition Muzzle Brake with crush washer.
• Bolt Carrier Group: 6MM ARC 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