The Aero Precision M5 Lower Parts Kit with MOE SL Grip is a complete, factory-assembled solution for anyone building or completing an AR-308 platform rifle. This kit brings together every internal component you need to finish an Aero Precision M5 lower receiver—no hunting through catalogs or worrying about compatibility. Whether you're assembling your first .308 AR or replacing worn internals on an existing build, this all-in-one kit eliminates guesswork and gets you to the range faster.

The included Magpul MOE SL Grip in black pairs aggressive texturing with a slimmer profile, giving you confident control without excess bulk. The kit features mil-spec fire control group components—hammer, trigger, springs, and disconnector—proven reliable across thousands of rounds. M5-specific takedown and pivot pins, bolt catch, and extended magazine catch button ensure proper fit and function in the larger .308 platform. Every detent, spring, and roll pin needed for assembly is included; the 4-40 set screw covers installations with threaded takedown pin detent holes.

Aero Precision engineered this kit to the same standards they apply to complete uppers and receivers—no corner-cutting on internals. If you're planning to upgrade to a match-grade trigger later, this kit's fire control group components swap cleanly with aftermarket alternatives. The straightforward parts list and logical organization make assembly straightforward for experienced builders; newcomers will appreciate having everything they need in one box rather than ordering pieces piecemeal.

The Aero Precision M5 Lower Parts Kit with MOE SL Grip is a complete, factory-assembled solution for anyone building or completing an AR-308 platform rifle. This kit brings together every internal component you need to finish an Aero Precision M5 lower receiver—no hunting through catalogs or worrying about compatibility. Whether you're assembling your first .308 AR or replacing worn internals on an existing build, this all-in-one kit eliminates guesswork and gets you to the range faster.

The included Magpul MOE SL Grip in black pairs aggressive texturing with a slimmer profile, giving you confident control without excess bulk. The kit features mil-spec fire control group components—hammer, trigger, springs, and disconnector—proven reliable across thousands of rounds. M5-specific takedown and pivot pins, bolt catch, and extended magazine catch button ensure proper fit and function in the larger .308 platform. Every detent, spring, and roll pin needed for assembly is included; the 4-40 set screw covers installations with threaded takedown pin detent holes.

Aero Precision engineered this kit to the same standards they apply to complete uppers and receivers—no corner-cutting on internals. If you're planning to upgrade to a match-grade trigger later, this kit's fire control group components swap cleanly with aftermarket alternatives. The straightforward parts list and logical organization make assembly straightforward for experienced builders; newcomers will appreciate having everything they need in one box rather than ordering pieces piecemeal.