MK III Modular Hand Guard
Length: Rifle (12.5" OAL)
Platform: AR-15/M16
Tube Style: Knurled Signature
Specifications:
Material: 6061 T6 aluminum with 7075 aluminum barrel nut
Max. Compatible Barrel OD: 1.05"
Inside Diameter: 1.75"
Outside Diameter: 2"
Overall Length: 12.5"
Weight: 5.616 oz.(barrel nut) / 9.856 oz.(tube)
Color: Matte black hard coat anodizing or custom color Cerakote
Compatibility:
This hand guard is not compatible with newer Bushmaster CARBON-15 rifles. Rifles with serial number E18000 or higher use a barrel nut thread size that is larger than standard, so standard AR-15 free-float hand guards cannot be installed.
Tactical Rail Selection:
Any rail segments purchased at the same time as MK III Hand Guard are available at 20% off when selected from the the menus at right. All rails are anodized black regardless of any color option upgrade.
Full-length 12:00 rails or the 2-inch front sight rail (JPTR-FS) can be attached directly to the top of the hand guard tube while two- and four-inch accessory rails can be mounted directly (without backer plates) to the tube at the 6:00 position using the 10-32 flathead screws included with the rail segments.
For the 3:00, 9:00 and each of the 45° positions, the Signature tube design uses rail segments with backer plates that fit into the tube slots. Refer to the table below to determine which rails you need for a given application.