Heckler & Koch USP Safety Lever Kit Ambidextrous Black. This item can be installed on either full-size or compact pistols. The USP ambidextrous lever set has a higher profile over the compact lever set for those who prefer the standard USP profile. Easy to install no gunsmith needed. Specifications for Heckler & Koch USP Ambidextrous Safety Lever Kit: Manufacturer: Heckler & Koch Color: Black Gun Make: Heckler & Koch Gun Model: Heckler & Koch USP Hand: Ambidextrous Package Contents: Heckler & Koch USP Ambidextrous Safety Lever Kit What firearm models does the manufacturer say Heckler & Koch USP Ambidextrous Safety Lever Kit is compatible with? The manufacturer says that Heckler & Koch USP Ambidextrous Safety Lever Kit is compatible with Heckler & Koch USPHeckler & Koch 50217891: USP Safety Lever Kit Ambidextrous Black