STNGR AR-15 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH Flat Dark Earth Cerakote. Perfect for those who want to save time with a truly plug-and-play solution. This upper features standard A2 flash hider which provides excellent flash reduction and compensation. This complete upper uses a 11.5 inch 5.56 NATO barrel with 1:7 twist performance Bolt Carrier Group (BCG) billet upper carbine gas system and is compatible with all mil-spec lowers. Shop the new complete upper and join the SWARM Specifications for STNGR AR-15 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH: Manufacturer: STNGR Caliber: 5.56x45mm NATO Barrel Length: 11.5 in Barrel Profile: Standard Gas System Length: Carbine Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: Flash Hider Gun Model: AR-15 Fabric/Material: Steel Gas Block Journal Size-Diameter: .750 in Handguard Length: 10.5 in Gun Rail: M-LOK Gun Make: AR Platform Barrel Material: 4150 CMV Steel Weight: 3.5 lb Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Magazine Included: No Features of STNGR 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH Billet Upper Receiver AR15 Charging Handle Forged Premium Phosphate M16 Bolt Carrier Group (BCG) 9310 Alloy Steel Bolt Case Hardened Shot Peened MPI 8620 Alloy Steel Carrier Low Profile Gas Block .750in Set Screw A2 Flash Hider with Crush Washer Pin Hinge Dust Cover Ejection Port Spring Package Contents: STNGR 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH What firearm models does the manufacturer say STNGR AR-15 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH is compatible with? The manufacturer suggests that STNGR AR-15 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH is compatible with AR-15STNGR STNGR-CU-P-RPTR-10-0-FDE: AR-15 5.56 NATO 11.5in M-LOK Complete Upper w/10in RPTR Handguard BCG & CH Flat Dark Earth Cerakote