Colour: Black Make: Browning,Colt,Mossberg,Sig Sauer,Westernfield,Winchester Material: Aluminum Model: 52,61,730,810,BLR,Coltsman,RM7,SHR 970 Number of Bases: 1-Piece Style: Weaver-Style Bases,Front Base,Rear Base Delivery weight: 0.009kg Shipping width: 83mm Shipping length: 146mm UPC : 076683480255