HK91 / G3 / HK51 Series
Discover the ultimate collection of parts for your HK G3 and HK 91, designed to enhance precision, reliability, and performance. Featuring G3 Stocks for improved ergonomics, 91 Barrels for superior accuracy, and G3 Triggers for enhanced responsiveness. Our selection also includes 91 Handguards for advanced protection and control, G3 Forearms for optimal handling, and detailed Parts Kits to fully equip your firearm for any scenario. Each component is engineered for flawless compatibility with your HK G3 or HK 91, ensuring your rifle meets the highest standards of operation and craftsmanship.
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On Sale
HK Gen 1 Spring Upgrade - Roller Retainer Plate
HKP HK Parts
Now: $7.96Was: $9.95HKP 1st Gen Roller Retainer Plate To Spring Upgrade This action 3 roller retainer spring for all 1st Generation bolt heads replaces the oval-shaped roller retainer plate. HK made a wire spring as an upgrade for later production bolt heads to improve the...Now: $7.96Was: $9.95 -
On Sale
HK Rifle Extractor Spring - FMP
H&K Heckler & Koch
Now: $3.14Was: $3.49HK Parts contracted with FMP to bring you this Rifle Extractor Spring Features: New FMP contract The extractor spring is the number one replaced item on HK firearms. Many HK gunsmiths recommend upgrading HK94, HK MP5 series HK's with a longer stronger...Now: $3.14Was: $3.49 -
HK91, G3 Ejector Lever - Used
H&K Heckler & Koch
$3.95.308 Ejector Lever - Used In perfect working order, pulled from surplus HK German G3's. Compatible With: HK G3 HK 91 PTR-91 HK 51$3.95 -
On Sale
RennSteig 8 Piece Punch Set For HK Firearms
RennSteig
Now: $31.46Was: $34.95Metric Parallel Pin Punch Set With Guide Sleeves - German Manufacture - 8 Piece This punch set is the exact same set used in the HK Armorer classes and approved by HK for use when installing & removing the roll pins from HK pistols & rifles...Now: $31.46Was: $34.95 -
HK MP5, G3, 93 Optic Mount - Micro Low
MFI
$110.95HKPARTS 2025 MFI Micro 1913 Picatinny Rail Scope Mount for HK MP5/94/G3/91/93 This mount allows for installation without completely removing the screws from the mounting claws. The claws can remain attached to the bolt or screw, allowing the entire...$110.95 -
On Sale
HK90 Series Push Pin - Buttstock
H&K Heckler & Koch
Now: $3.56Was: $3.95H&K 90 Series Butt Stock Push Pin Each large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. Large push pins are for the stock and the small push pin is for the forearm and lower. The HK German genuine push...Now: $3.56Was: $3.95 -
On Sale
HK Stock Pin Bushing Weldment
HKP HK Parts
Now: $3.16Was: $3.95HK Stock Push Pin Bushing Weldment All-steel stock pin bushing weldment for welding in the rear of the flat. This bushing welds into the folded flat and guides the large push pin through the receiver to hold the stock to the receiver. Compatible...Now: $3.16Was: $3.95 -
On Sale
HK Roller Retainer Pin - New Style
H&K Heckler & Koch
Now: $6.25Was: $6.95HK Roller Retainer Pin, Clamping Sleeve- New Style This part works with all roller retainer plates and springs. HK started this change of roller retainer pins starting in all 2011-produced bolt heads. Works with all styles of roller retainer plates...Now: $6.25Was: $6.95 -
On Sale
HK 90 Series Axle - Ejector Lever - US
HKP HK Parts
Now: $7.96Was: $9.95US Ejector Lever Axle This US ejector lever axle pin holds the ejector lever in place in the trigger pack. Made out to HK spec for the best US replacement part on the market. The best replacement for your worn out or broken axle. A must have replacement...Now: $7.96Was: $9.95 -
On Sale
HK Cleaning Brush - Barrels - Chamber Face
HKP HK Parts
Now: $20.79Was: $25.99HKP Chamber Face Brush For All Barrels This brush was specifically designed to clean those hard-to-reach nooks and crannies in the barrel face. Threaded to fit all standard 8/32 US cleaning rods. Compatible With: G3, 91, PTR 93, 33, 53 MP5, MP5SD,...Now: $20.79Was: $25.99 -
On Sale
HK Push Pin - Butt Stock - German
H&K Heckler & Koch
Now: $8.05Was: $8.95HK German Butt Stock Push Pin Each large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. These are great replacement or spare parts to keep on hand as they fit all of the 90-series firearms below. The large push...Now: $8.05Was: $8.95 -
On Sale
HK SEF Long Axle Selector Lever For Polymer Trigger Housings
H&K Heckler & Koch
Now: $22.45Was: $24.95HK SEF Longer Axle Selector Lever For The Polymer SEF Type Grips Or Trigger Housings - Used This is the factory-correct selector lever for SEF or SEF-style semi-auto-style trigger packs and grip frames. These are pulled from German HK SEF trigger...Now: $22.45Was: $24.95