Out of stock
SKU: APAR6000-P
UPC: 815421022315
MPN: APAR600001C
The Aero M4e1 Stripped Lower represents the foundation of any reliable AR-15 platform build, serving law enforcement, military personnel, and civilian shooters who demand precision and durability. This forged aluminum component is the legally regulated serialized portion of the rifle, making it the starting point for custom builds where you retain complete control over caliber, trigger group, stock, and ergonomics. Whether you're constructing a duty rifle, precision platform, or training system, the M4e1 stripped lower provides the structural integrity required for professional applications.
Aero Precision's M4e1 lower is machined from 7075-T6 aluminum forgings, the same material specification used in military small arms programs, ensuring dimensional consistency and long-service-life reliability across thousands of rounds. The stripped configuration means the fire control cavity and trigger housing are properly finished but ship without the hammer, trigger, disconnector, or springs—allowing builders to select match-grade two-stage triggers or duty-spec single-stage groups based on mission requirements. At 0.75 lbs, this lower integrates seamlessly into virtually any complete or partial upper assembly, with a compact footprint (4.5 x 2.5 x 9 inches) that maintains standard AR-15 ergonomics and compatibility with legacy and modern furniture.
Professional armorsmiths and serious builders select this lower for its mil-spec receiver extension threads, properly-sized mag well, and enhanced controls geometry that accommodates modern ambi safety selectors and extended bolt release buttons. Installation requires only a standard armorers wrench and basic hand tools—fire control group assembly is straightforward for anyone with weapons system experience. The M4e1 stripped lower accepts any standard AR-15 complete fire control assembly, buffer tube, stock, pistol grip, and magazine, making it compatible with every modern AR-15 upper receiver from 5.56 NATO to .300 Blackout, .458 SOCOM, and other established calibers.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
