Upgrade individual components, or get everything you need for a complete large caliber M5 / AR308 build. Our DNA of precision and reliability are exemplified with these premium parts.

Find all the parts, general build instructions & details on Aero Precision's M5, AR10 line of rifle parts & accessories.

Shop M5 .308 Lower Receivers for your next large caliber AR rifle build. Buy as a Stripped Lower Receive or Complete Lower Receiver.

Shop for M5 .308 Lower Parts Kits from Aero Precision. Get the high quality components needed to assemble your M5 Lower Receiver with free shipping over $99.

m5 Our M5 .308 Stripped Lower Recivers help you build a big-bore AR from the ground up. Mil-spec dimensions and premium coating ensure these lowers are the highest quality interface for your build.

Shop Aero Precision's selection of buffer, kits, triggers, furniture, magazines & more for your next AR10 build.

Precision machined to our specs; M4 feedramps; Laser engraved T-marks (Anodized only).2795” takedown pin holes; Accepts standard AR .308 components; Comes with forward assist and port door installed; Handguard mounting platform is forged into the receiver; Gen 2 Enhanced Handguard Features: 1pc free float design; Built in anti-rotation tabs ...

Our M5 (.308) lower parts kit helps you to build a custom .308 AR from the ground up. Mil- spec dimensions and coating ensure the highest quality and correct component interface. Features: Aero Precision M5 (.308) Complete Lower Parts Kit; Our custom takedown and pivot pins are made to work with our M5 lower.

Aero Precision M5 Lower Receivers are the perfect base for your AR10 / AR308 build. High quality American made parts with free shipping over $99.

Shop M5 .308 Complete Upper Receivers featuring an installed barrel, gas block and gas tube. The perfect starting point for your 7.62/.308 or 6.5 Creedmoor build.