H&K Heckler & Koch

H&K 2 Position (0,1) Semi-Auto Trigger Pack Housing This trigger pack housing is professionally converted to semi-auto with all legal and correct modifications, including a semi-sear hole and...

H&K Heavy 8.5 lbs Trigger Return Spring Also known as the heavy LEM trigger spring for the LEM and TGS conversions. Compatible With: HK USP Full Size 9mm, .40 & .45 HK USP Compact 9mm, ...

Burst Pack Trigger Spring - HK German New HK German trigger return spring used on all HK 90 series burst trigger packs. MP5, HK53, G3 burst, 2 or 3 round burst trigger packs. 

H&K Trip Lever - Friction This is the older friction-style trigger pack found on older HK trigger packs and all HK registered sear packs.

H&K Trip Lever- Friction - Used - Surplus HK German trip lever for HK F/A or registered sear trigger packs in used surplus condition. This is the older friction style trigger pack found on older...

30 Round Magazine – Used – UMP .40 S/W This magazine will fit all HK UMP .40 caliber UMP’s as well as the USC-UMP .40 caliber conversions. Used factory HK magazine. Compatible...

New HK German 2 Position Lower Complete New German Heckler & Koch UMP Lower. 2 position settings (S,F). Each lower comes complete with all the factory internals. This item is ideal for the USC to...

30 Round Magazine - LEO Marked - Used - UMP .40 S/W Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Used in good condition. The...

Heckler and Koch Ump Barrel made in Germany  These are police department trade-in barrels in good shape and perfectly usable.

HK German All Steel UMP Carrier Guide This is the steel piece the guides the UMP bolt carrier. Compatible With: All HK UMP lowers

German UMP .40 factory F/A Bolt Group - Complete This item is used in very good shape.

HK German Factory UMP  Receiver Section - Extended Demilled factory HK UMP rear receiver section perfect for a USC-UMP conversion. With the folding stock attachment point intact right in front...