It Made of CNC, 6061-T6 aircraft grade aluminum, not easy to scratch, strong durability.
Installation Compatible with: Remington 870, 1100, 1187;Benelli M4, M2(except SuperNova); Mossberg 500/590A1, 590/590S, 12ga, 20" 8 rd, 590m, Mossbewrg 930 spx, 940, maverick 88; Winchester 1300, 1200 and SXP Defender, Beretta 1301, Some Semi-auto models of Derya, Stoeger M3000/M3500