Lightweight, super strong, and snag free design Designed and tested to withstand real world use by military or law enforcement agencies Billet machined from Aerospace 6061 T6 aluminum Milspec hard coat anodized finish Steel cross bolts that engage stainless heli-coils for superior clamping force All installation tools and hardware are included Compatible with Aimpoint T1/T2 red dots and T1 interface clones below: Aimpoint T1/T2, H1/H2, Comp M5 Vortex Crossfire Primary Arms SLx Advanced Micro Dot Holosun HE403, HE503, HE515 Sig Sauer Romeo4 (Post 2016 Model), Romeo5