Night Fision's Pistol Optic Plates offer precision, durability, and value for shooters needing a mounting solution for their red dot sight. Crafted from premium 17-4 stainless steel and built to the tightest tolerances, these plates withstand harsh recoil and ensure a secure, accurate fit. Compatible with Glock Full Size & Compact MOS models Fits Holosun 509t, and other optics with compatible mounting footprint. Machined from 17-4 Stainless Steel & Nitride coated Optic Plate thickness: 0.2". Limited Lifetime Warranty