What are 308 Winchester Upper Receivers?

308 Winchester Upper Receivers are standard issue on AR-10 / LR308 platform rifles. Also known as 7.62x51 NATO, 308 WIN is among the most popular ammunition in the world. Upgrading your AR10 / LR308 to a higher quality 308 WIN upper assembly can yield significant gains in accuracy and effectiveness.

What is the Effective Range of a 308 Winchester Upper Receiver?

The maximum effective range of a 308 Winchester Upper Receiver is between 700 and 1000 yards. The muzzle velocity is between 2500 and 2800 feet per second, making it an optimal mid to long-range hunting rifle.

What is the Recoil of a 308 Winchester Upper Receiver?

The average recoil of a 308 Winchester Upper Receiver is around 16-17 ft-lbs. For a 120-140gr projectile with a 1000 yard range, this is quite reasonable. Compared to 5-6 foot-pounds for 556 NATO, however, the recoil will be more noticible.

Will the 308 Winchester Upper fit my Lower?

Unlike AR15, the AR10/LR308 platform is not standardized, so not every upper will fit every lower. We offer 308 Winchester uppers with either DPMS Gen 1 or Aero Precision M5 Upper Receivers. This covers the vast majority of lowers, but there are some exceptions so if you have any questions, contact our support team at 866.706.0633 or [email protected].

What BCG and Magazine do I Need for a 308 Winchester Upper?

The 308 Winchester Upper Receiver uses the standard 308 WIN Bolt Carrier Group (BCG) and the standard 308 WIN / 7.62x51 NATO Magazine. So, swap out the Upper and load 308 Winchester ammo and you are ready to go.