The JP-15(TM) is a general purpose rifle with all the performance features of our billet models packed into our high-quality but less expensive 7075 mil-spec forged JP receiver set. ItA's a tremendous value for the dollar and will deliver outstanding performance for any application: recreation, varmint, competition or duty. It includes our JP Supermatch(TM) barrel with a high-efficiency JP compensator perfectly blended and timed to the barrel, JP adjustable gas system, proprietary JP Thermo-fit(TM) barrel installation method, single-stage JP Fire Control System for sub-MOA accuracy and the JP MK III Hand Guard system for maximum versatility. If you've shopped around, you know that a JP-15(TM) is a great buy. This Upper Assembly Build Sheet JP15UA: JP15 Complete Upper Assembly OPToJP15UA: Small frame top charge forged upper assembly, matte black finish oRAD-RAPTOR-LT15: Radian Raptor-LT over-molded ambidextrous charging handle for use with AR15/M16 oJPSM223-14.5L8M: Supermatch Barrel .223 Chamber 14.5" Light Contour 1:8 Twist Mid-Lenght Gas System oJPTRE3-2S: 3-Port Compensator 1/2"-28 TPI .750 OD .281 Exit Stainless Pin Comp: Modify Barrel and Brake for Pinned Comp oJPTD650S SLV: Short Thermal Dissipator Silver .650 BBL 6.125" oJPHG3-1M-RC: MK III Free-floating rapid cofiguration hand guard Rifle length 12.5" Overall Length Knurled Matte Black Hard Coat Anodized oJPGS-9D: Two-Piece Adjustable Gas Block with Detent .750 Bore Black Stainless Low Profile oJPBC-3SP: Low Mass Bolt Carrier for Small Frame (.223) Polished 416 Stainless Finish oJPEB-223: Enhanced Bolt Assembly .223, DLC Finish oFP223 STD: .223 Standard Firing Pin 223 UPPER PACK: Upper Accessory Pack