243 Winchester AR10/LR308 Upper Assembly / 243 Winchester Complete Upper Receiver for AR10/LR308

The 243 Winchester (6.2x52mm) is a necked-down 308 Winchester introduced in 1955 for small- to medium-game hunting. It is the smallest caliber legal for dear hunting in 10 US states. 243 Winchester, with a muzzle velocity of 3900 fps, is highly accurate at 300 yards. With its low recoil, it can be more accurate for inexperienced shooters. We offer upper receivers that are compatible with both DPMS Gen 1 (LR308) and Aero Precision M5 (AR10) pattern lower receivers. Call us with any compatibility questions, we are here to help.

AR15Parts.com components are sourced from top US manufacturers including Aero Precision, Anderson Manufacturing, Shaw Barrels, Swan Machine, Wilson Arms, Wilson Combat, ZRO Delta, and others. Each upper assembly has options to select Rail, Muzzle Device, Bolt Carrier Group (BCG), Charging Handle, and Magazine. Additional parts are available individually on our website.

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