THESE SBRs ARE USED, FACTORY, DEPARTMENT TRADE INS. UPPER RECEIVERS ARE MARKED “LEWIS MACHINE & TOOL CO.”
LMT built this short-stroke gas piston SBR with its patented Monolithic Rail Platform, milled from a single high-grade aluminum forging. Two locking bolts on the side of the receiver lock the barrel extension in place. MRP® technology engages the barrel extension for a full 360 degrees and allows the barrel to be removed in seconds while minimizing point of impact shift. One upper can support numerous barrels of varying length, material, and caliber. This particular SBR is equipped with a 12″ chrome-lined piston barrel and a semi-auto bolt carrier group.
- MRP-L QUAD 9.25″ Upper, with “LEWIS MACHINE & TOOL CO.” markings.
- Defender Lower Receiver (ONLY INCLUDED IN THE SBR VERSION, IT IS NOT INCLUDED IN THE PARTS KITS)
- 12″ Piston Chrome Lined 5.56×45 (.223) 1:7″ RH twist barrel | Short-stroke Gas Piston System
- Semi-Auto Bolt Carrier Group
- LMT SOPMOD Buttstock
- Tactical Charging Handle
- No magazine included.