HK91 / G3 / HK51 Receivers / Uppers
Upgrade the core of your HK G3/91 or PTR 91. Choose from genuine HK receivers, high-quality US-made options, and custom receivers for specialized builds.
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On Sale
HK MP5, G3, HK93 Magazine Catch Push Button- Used
H&K Heckler & Koch
Now: $3.71Was: $8.95H&K MP5, G3, PTR, HK93 Push Button for Magazine Catch - Used Factory original HK push button replacement part. Limited quantity available.HKP-99316Now: $3.71Was: $8.95 -
HK Receiver Flat Bending Set Jig - RENTAL
HKP HK Parts
$99.95Flat Bending Jig Set For All HK Style Receiver Flats - RENTAL Receiver flat bending jig RENTAL for all HK receiver flats. Our rental jigs are crafted in the USHKP-19595-RENTAL$99.95 -
HK MP5, MP5K Sling Attachment Weldment - Ambi - Front End
HKP HK Parts
$14.95HKP Front Sight Tower Ambi Sling Attachment Weldment Ambi sling loop that is welled and installed on all MP5F model front sight tower. A great upgrade for that custom build or for those that want to...HKP-17881$14.95 -
HK G3 Rear Receiver Section with Rear Sight - Complete - Parkerized - SURPLUS
H&K Heckler & Koch
$54.95H&K G3 Complete Parkerized Rear Receiver Section w/ Rear Sight - SURPLUS UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Sold IndividuallyHKP-22164$54.95 -
HK German Bayonet Adapter With Hardware
H&K Heckler & Koch
$159.95H&K German Bayonet Adapter With Hardware HK German Bayonet Adapter W/ Hardware made under a Turkish contract. The HK bayonet adapter replaces the cocking tube end cap (dust cap). Then the bayonet...HKP-00021$159.95 -
HK91, G3, HK33, HK53, HK93 Paddle Magazine Release - Anti-Rattle
MKE
$32.95MKE Anti Rattle Paddle Magazine Release for HK91, HK G3s and HK33, HK53, HK93 Upgrade your rifle with MKE's anti-rattle style paddle mag release.HKP-99348$32.95 -
On Sale
HK91, G3, HK33, HK93 Bayonet Adapter Replacement Kit - Turkish Contract
Other
Now: $13.46Was: $14.95Turkish Contract Bayonet Adapter Replacement Kit for HK91, HK G3, HK33, HK93 Turkish contract replacement hardware kit for early-style bayonet adapters. Intended for use with pre-ban pattern adapters...HKP-22518Now: $13.46Was: $14.95 -
On Sale
HK FMP G3 Rear Receiver Section - SURPLUS
FMP HK CONTRACT
Now: $22.46Was: $24.95H&K G3 Complete Parkerized Rear Receiver Section without Rear Sight - SURPLUS UNIT CONDITION WILL VARY Steel rear receiver section manufactured by FMP on HK tooling. Does not include the rear sight...HKP-22375Now: $22.46Was: $24.95 -
HK G3 Early Style Backplate with Recoil Rod - Used
H&K Heckler & Koch
$24.95G3 - Early Production CETME, G3 HK91 Backplate - UsedHKP-19556$24.95 -
HK91, G3, HK33, HK53, HK93 Paddle Magazine Release - Anti-Rattle - USED
H&K Heckler & Koch
$42.95Heckler and Koch Anti Rattle Paddle Magazine Release for HK91, HK G3s and HK33, HK53, HK93 - USED This is a used German anti-rattle paddle mag release for installation on all Heckler and Koch...HKP-22061$42.95 -
On Sale
HK G3 - FMP Early Type Demilled Front End
FMP HK CONTRACT
Now: $63.72Was: $99.95HK G3 - FMP Early Type Demilled Front End Early style G3 front end with no hanger. These are the perfect option for those doing custom builds. Good condition over all. Includes: Cocking tube<HKP-20845Now: $63.72Was: $99.95 -
Out Of Stock
HK91, G3, PSG1, MSG90 T-Rail Reinforcement Set for Receiver
Michaels Machines
$299.95HK Receiver Reinforcement T-Rail Set For Left and Right Sides T-rails are used to strengthen HK receivers or for custom builds. These are the finest T-rails available on the market. Made from...HKP-00236$299.95