
Proof Research Carbon Fiber Barrel, specifically converted by D. Wilson manufactuting to fit LMT MRP Rifles.
All barrels will be 416R stainless steel barrel blanks wrapped in proprietary aerospace-grade carbon fiber made for AR15 Platforms.
5/8x24mm muzzle threads for the 300 BLK with .750 inner gas block diameter and 1:7-1:8 twist cut rifling.