DNZ's Hunt Masters two piece scope mounts are custom made to fit each type of firearm and align perfectly with your rifle's receiver. Each ring and base is machined from top-grade aluminum, which absorbs shock and withstands temperature extremes at a fraction of the weight. The Hunter Masters uses a internal ring and base design which allows for extra eye relief adjustment and has up to four times the threads of other mounts for absolute strength and security. Fits HOWA 1500 & Mini, Mossberg 100 ATR, 4X4 & Patriot, Nosler M48, Weatherby Vanguard, Remington 700,721, 722, 725, Bergara B14.