Heckler & Koch Universal Law Enforcement Modification Trigger Kit HK USP/USP Compact/HK45/HK45 Compact Black. The universal LEM kit also fits the HK45C & HK45 Pistols. This kit will enable you to convert your V1-V10 HK Pistol to the LEM Conversion. Each LEM kit includes all of the parts necessary for the light LEM 4.5-5lb trigger pull. As well as the heavy LEM 7.5-8 lb. trigger pull. Specifications for Heckler & Koch Universal LE Modification Trigger Kit HK USP/USP Compact/HK45/HK45 Compact: Manufacturer: Heckler & Koch Color: Black Gun Make: Heckler & Koch Gun Model: Heckler & Koch HK45 Heckler & Koch HK45 Compact Heckler & Koch USP Compact Heckler & Koch USP Weight: 1.3 lb Trigger Pull Weight: 4.5 - 5 lb Package Contents: Heckler & Koch Universal LE Modification Trigger Kit HK USP/USP Compact/HK45/HK45 Compact Hammer Cocking piece Hammer rebound spring Light trigger return spring Heavy trigger return spring Hammer spring (long) for USP USPC & HK45 Hammer spring (short) for the HK45C Sear Hammer Axle (solid) What firearm models does the manufacturer say Heckler & Koch Universal LE Modification Trigger Kit HK USP/USP Compact/HK45/HK45 Compact is compatible with? The manufacturer says that Heckler & Koch Universal LE Modification Trigger Kit HK USP/USP Compact/HK45/HK45 Compact is compatible with Heckler & Koch USP Heckler & Koch USP Compact Heckler & Koch HK45 Compact Heckler & Koch HK45Heckler & Koch 260204: Universal Law Enforcement Modification Trigger Kit HK USP/USP Compact/HK45/HK45 Compact Black