New! Heckler & Koch MR762 A4 AR-15/M16/M4 .308 Winchester/7.62x51mm NATO 13in Upper Receiver 51001919 Caliber: .308 Winchester, 7.62x51mm NATO, 13% Off w/ Free S&H

This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 7.62 mm AR-style rifles to be retrofitted to HKs piston and pusher rod system. This system utilizes a piston and a pusher rod in place of the gas tube normally found in AR15/M16/M4-style rifles. This closed system virtually eliminates the malfunctions that are common in direct-impingement gas systems, since hot carbon fouling and waste gasses are not propelled into the receiver area to operate the action. This is the same key feature critical to the success of the HK417 used by elite military and law enforcement customers.

Specifications for Heckler & Koch MR762 A4 AR-15/M16/M4 .308 Winchester/7.62x51mm NATO 13in Upper Receiver:

Features of Heckler & Koch MR762 A4 AR-15/M16/M4 .308 Winchester/7.62x51mm NATO 13in Upper Receiver

• Complete MR762 A4 Upper Receiver/Barrel Assembly HK cold-hammer forged barrel, upper receiver with forward assist, extended convertible charging handle, HK Free Floating Rail System handguard
• Complete MR556 Bolt Group Assembly
• Tungsten Filled HK Proprietary Buffer
• HK Proprietary Buffer (Action) Spring
• Adjustable Gas Block
• Ships in HK Soft case.

Package Contents:

• Heckler & Koch MR762 A4 AR-15/M16/M4 .308 Winchester/7.62x51mm NATO 13in Upper Receiver

What firearm models does the manufacturer say Heckler & Koch MR762 A4 AR-15/M16/M4 .308 Winchester/7.62x51mm NATO 13in Upper Receiver is compatible with?