AR15 Lowers

The AR-15 lower receiver is the serialized part — it’s what the ATF calls “the firearm.” Stripped lowers give you the freedom to spec every component from the trigger group up. Completed lowers include the fire control group, buffer tube, stock, and grip — drop-in ready for any mil-spec upper. Aero Precision M4E1 and Anderson Manufacturing stripped lowers cover the value end; billet options from Wilson Combat and BCM sit at the top. Most mil-spec lowers accept any mil-spec upper regardless of brand.

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