- 7075 Forged 80% Lower
- Gen 2 Pocket
- Broached Magwell
- Threaded Bolt Catch Pin
- Raw Tumbled Finish
Each unit starts as a 7075 mil-spec forging. ZRTS machines the units to 80% completion meeting all ATF requirements for an 80% AR lower. Magwell corners are broached. Includes “Gen 2” pocket for upper receiver test fitting. ZRTS lowers include enhanced features such as a threaded bolt catch pin and rear take down pin detent set screw. These components are included with each lower. These are raw aluminum with a tumbled finish.