USED Bilson Arms 9mm Pump Style Forward Charging Upper Assembly with 416R-Stainless Steel Barrel Cerakote/Anodized 1. 5 in Barrel Length: 16 in Barrel Profile: Pencil Barrel Twist Rate: 1-10 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Finish: Cerakote/Anodized Color: Cerakote/Anodized Gun Model: AR-15 Fabric/Material: 6061-T6 Aluminum Handguard Length: 15 in Gun Rail: Picatinny Gun Make: AR Platform Barrel Material: 416R Stainless Steel Weight: 4.8 lb Bolt Carrier Group Included: MIL-SPEC Charging Handle Included: MIL-SPEC Magazine Included: No Condition Details: Inspect And Rebox Condition Quality: Good Condition: Used Mount Type: M-LOK Threads per Inch: 1/2x28 Features of Bilson Arms 9mm Pump Style Forward Charging Upper Assembly with 416R-Stainless Steel Barrel: Manuf in-house more efficient and ergonomic Patent pending forward charging action Package Contents: Bilson Arms 9mm Pump Style Forward Charging Upper Assembly with 416R-Stainless Steel Barrel Steel Nitride BCG What firearm models does the manufacturer say Bilson Arms 9mm Pump Style Forward Charging Upper Assembly with 416R-Stainless Steel Barrel is compatible with? The manufacturer says that Bilson Arms 9mm Pump Style Forward Charging Upper Assembly with 416R-Stainless Steel Barrel is compatible with AR-15Bilson Arms 9mm Pump Style 416R-Stainless Steel Forward Charging Upper Assembly FDE/Black 1 A9UFCFN1001-416RSS