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AR-15 · Lower receiver
Aero Precision AR15 Gen 2 Stripped Lower Receiver
$120
Standard AR-15 lower for all five calibers. 7.62x39 steel mags can bind or fail to lock back in some magwells; an enhanced bolt catch or specific mag brand may be needed. .450 BM uses dedicated straight-wall mags that fit a standard magwell.
Build with this partOpens the builder with this part fitted. Other parts change only if they have to.
Pros and cons
Pros
- Integrated trigger guard and flared magwell
- Threaded bolt catch pin
- Upper tension screw cuts wobble
Cons
- Bolt catch pin uses proprietary threads
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