6061-T6 aluminum - Hardcoat Anodized per MIL-A-8625F Type III. Class 2 - Superior Overall Strength - 1st AK side scope rail mount to offer a return to zero capability - Offers four times clamping improvement over traditional side scope rail mounts - Improves sight acquisition for follow-up shots - Modular mounting of optic from front to back - Allows for complete field stripping of rifle without removing the scope rail mount - Compatible with most standard T1/H1 style optics - Includes all required hardware - 100% American made