The DeltaPoint has precision locating pins to allow for easy removal/remount while maintaining point of impact. This lets you easily change batteries when needed and not re-sight. The versatility of the DeltaPoint is reflected in the numerous mounting options included in the "All Mounts" kit. A unique plate system aligns the mount with the gun, ensuring a perfect fit. Every DeltaPoint All Mounts Kit includes 10 plates for the most popular handgun applications. You can also choose a cross-slot mount for easy coupling with Picatinny Weaver-style rails and bases. With so many options, you can guarantee a great fit on your favorite pistol, shotgun, or AR-style rifle. The DeltaPo Mfg: Leupold