Will fit all Sig 552 and Sig 553 firearms and pistols that have the bayonet lug attached to the front sight tower and gas block.
- Color: Black in color all metal
- Height max: 68.7 mm
- Length max: 139 mm
- Length of top rail: 139 mm
- Length of right rail: 139 mm
- Length of left rail: 139 mm
- Length of bottom rail: 139 mm
- Material: Aluminum
- NATO Accessory Rails: 4
- Part number: BT-21165
- Treatment: Hartcoat anodized
- Weight: 380 g
- Width max: 56 mm