Re-engineered for improved reliability and performance with lower maintenance requirements, the new JPBC-1 is the ultimate in improved reliability and performance, especially when combined with a high-efficiency JP muzzle brake, adjustable gas system and Silent Captured Spring. The end result is a carrier that leaves your .223 shooting like a rimfire .22. The JPBC-1 checks in at 2.9 ounces less than the 416 LMOS(TM) carrier and 0.7 ounces less than even the titanium carriers offered on the market today. Each unit comes as a complete kit including our JP precision-ground, one-piece gas ring as well as a titanium firing pin. Run in concert, this gas ring ensures perfect bore-to-gas Mfg: J P Enterprises SPECS: Fits AR-15/M16 models.