Aero Precision M4E1 Stripped Lower
Best overall stripped lower / best first AR build
- +Threaded bolt catch roll pin installs with a hex key, eliminating the most frustrating part of lower assembly
- +Integral upper tension screw removes receiver wobble against any mil-spec upper
- +Integrated trigger guard is stronger than separate-tab designs and removes a common breakage point
- −Heavier than basic mil-spec lowers (8.35 oz bare receiver)
- −Proprietary threaded bolt catch pin is not cross-compatible with standard roll pin lowers







