Fits on the trigger guard of many firearms and is adjusted by shims to fit. You can zero the laser with hex screws and notches located at the bottom of the unit. Availability: Usually ships the same business day. MSRP: $34.95USA Optics: $19.50COLOR: BLACKSILVER Have a Question? Interested in an item? Give us a call or Send us an E-mail! Phone:1-813-495-7951 E-Mail: UsaOptics@aol.com We're available anytime after 8amEST!!