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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HK90, MP5K Sear Catch - Steel - US
HKP HK Parts
$47.95HKP HK Parts HK90, HK MP5K Sear Catch - Steel - USA Made - Billeted Machined - Steel Hard to find and important for keeping your HK build 922r compliant. This US-made sear counts as one US-compliant part for your rifle or build. Machined from a bar of...$47.95 -
HK91, G3 Mag Release Set
H&K Heckler & Koch
$34.95Heckler and Koch Magazine Release Set (Left to Right) for HK91, G3 This magazine catch set consists of 4 pieces and is HK-manufactured. Includes: Magazine Catch Magazine Catch Spring Push Button Clamping Sleeve to retain Push Button Compatible...$34.95 -
HK51, PTR PDW Retractable Stock - A3
MKE
$459.95MKE HK51, PTR PDW Retractable Stock A3 Factory new MKE stock professionally converted to fit HK51 and PTR PDW rifles and pistols. This stock was modified with a heavy profile collapsing rod insert heat treated for longevity. The correct collapsing length...$459.95 -
HK91 Polymer To Metal Trigger Group Conversion Kit
HKP HK Parts
$225.95HK 91/PTR 91 Polymer To Metal Trigger Group Conversion Kit. This is everything you will need to convert the lower trigger group on your HK 91 from polymer to metal housing with contoured grip. Just use your existing trigger pack to complete the...$225.95 -
HK Universal Gun Cleaning Wick Set - 8 Piece Set
H&K Heckler & Koch
$1.95Original German Army Issue HK91/G3/PTR Cleaning Kit Wick - Set of 8 Originally issued for the G3,91 & MG3 firearms but will work on pretty much any and all rifles & pistols. Each set comes with 8 BRAND NEW German manufactured cleaning wicks. Each...$1.95 -
HK91, G3 Parts Kit- Hand Picked - PTR Barrel and Receiver Flat
H&K Heckler & Koch
$879.95G3, 91 Hand Picked Parts Kit - PTR Barrel and Receiver Flat Features: Handpicked stock set Handpicked housing, grip Handpicked magazine Handpicked end date coded bolt group New cocking tube included Full-auto bolt group PTR 18" GI barrel - 5/8 x...$879.95 -
HK90 Series Stock Locking Pin - Large
MKE
$6.95MKE Large Push Pin for your HK90 Series Stock Each large stock push pin is used to retain the stock to the receiver on the 90-series firearms. These are great replacement or spare part to keep on hand as they fit all of the 90-series firearms below. The...$6.95 -
HK91, G3 Extended Rifle Length Handguard - M-LOK
AIM
$129.95HK G3 EXTENDED RIFLE LENGTH HANDGUARD- M-LOK The most innovative and modular HK variant handguard on the market, our M-LOK HK forend can be used with all modern and traditional shooting techniques. CNC machined aluminum construction makes for a solid,...$129.95 -
HK91, G3, HK93, HK33, PTR Buffer - Enhanced
HKP HK Parts
$129.95HKP Enhanced Buffer This buffer is the factory correct style PSG1 & MSG90 stock buffer found in all factory HK PSG1, MSG90 German stocks. The overall diameter is .80" Compatible With: HK 91 G3, 93, 33, or PTR stock.$129.95 -
HK Standard Roller 8.00mm - Used
H&K Heckler & Koch
$7.958.00mm Standard Size (zero or unmarked) For HK Roller Lock Bolt Head HK spec unmarked 8.00mm roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. The best roller on the market...$7.95 -
HK Roller Sear For SEF, Navy Trigger Packs
H&K Heckler & Koch
$29.95H&K Roller Sear For SEF & Navy Trigger Packs It is the newer style, not the older friction type of sear. This item is also referred to as the catch with a roller but is more commonly called a sear.$29.95 -
HK91, G3 Cocking Handle - All Metal - Surplus
H&K Heckler & Koch
$8.49HK German HK G3 & HK 91 Older Style All Metal Cocking Handle Used German Military Surplus. No longer made or offered by HK. A genuine Heckler and Koch part. All steel cocking handle. Rare and hard to find. Compatible With: HK 91 HK G3 PTR-91 HK...$8.49