Stripped, small pin, semi-auto lower receiver is precision machined from a durable, 7075 T6 aluminum forging. Stamped “Cal Multi,” this versatile mil-spec receiver can be the foundation for rifle builds on 5.56/.223, 6.5mm, 6.8mm, 300 AAC Blackout, 9mm Luger, or other chamberings that fit the standard AR-15 receiver. Holes, inletting and pin locations have been cut to final dimensions and accept standard AR-15 magazines and components. Clearly stamped safe/fire switch position indicators ensure that you can easily identify the service state of the rifle.
Big Book Catalog, Issue:71, Page:007
SPECS: 7075 T6 aluminum, hardcoat anodized. Small pin, .154” (3.9mm) hammer/pin holes. .250” (6.3mm) pivot/takedown pin holes. FFL required for purchase.
The Perfect Foundation for the Rifle of Your Dreams
Looking to build your next AR-15 rifle? The Colt AR-15 M4 Complete Lower Receiver provides AR builders with the perfect foundation upon which to construct the rifle of their dreams.
The Colt AR-15 M4 Complete Lower Receiver is made entirely from 7075-T6 aluminum and features a black hardcoat-anodized finish for added durability.
- Marked for 5.56 NATO
- •single-stage semi-automatic trigger group
- Equipped with M4-style buttstock and pistol grip
The Colt AR-15 M4 Complete Lower Receiver is built using the same parts and the same attention to detail as the company's popular line of LE6920 AR-15 rifles.