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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HK91, G3 Rear Sight Assembly
H&K Heckler & Koch
$39.95HK German G3, 91, PTR Rear Sight Assembly Complete - HK German factory rear sight assembly with all hardware included. We offer the new HK sights at the BEST price in the country. Each set comes complete with all parts and all mounting hardware included...HKP-18163$39.95 -
Out Of Stock
HK33, HK53, HK93, HK91, G3 Rear Sight Base Weldment - 5.56 / .223 - 7.62 / .308
HKP HK Parts
$29.95HK G3, HK91, PTR & HK93, 33 & 53, FMP21 Rear Sight Base Weldment New US manufactured billeted from solid ordnance grade bar stock. Perfect for roller lock or other custom builds. Each unit is precisely machined and the best rear base available...HKP-17386$29.95 -
HK90 Series Cocking Tube End Cap - Aluminum
HKP HK Parts
$14.95H&K Cocking Tube End Cap - Aluminum - US Made Made from weight-saving aircraft-grade aluminum alloy. Compatible With: All 90 series HK firearms and clones that use a triple frame/sight towerHKP-02806-M$14.95 -
HK91, G3 SEF Navy Style Trigger Housing - Push Pin - USED
H&K Heckler & Koch
$29.95H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin - USED This grip housing comes in black polymer. Accepts standard SEF or 0,1 style trigger packs & SEF longer axled selector levers. This is truly an affordable upgrade for your...HKP-17354$29.95 -
HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1, P-2
HKP HK Parts
$98.95HKP HK MP5, MP5K Aimpoint ACRO P1, P2 Optic Mount The HK Parts Aimpoint ACRO low-profile mount is perfect for shooters seeking a minimalistic mount with an absolute co-witness. Crafted in the US from aircraft grade aluminum and coated in...HKP-21229-M$98.95 -
HK90 Series Trigger and Catch Axle
H&K Heckler & Koch
$1.99HK Sear & Trigger Axle For 90 Series- Used Surplus Condition HK German used sear and trigger axle for the 90 series style of trigger packs. Each axle pin or pivot pin measures .197 inches (5.0mm). A great spare and must have spare part for anyone...HKP-15459$1.99 -
HK Full Auto Paddle Magazine Release Bushing
H&K Heckler & Koch
$6.95H&K Full Auto Paddle Magazine Release Bushing - New New HK German paddle magazine release bushing for all 90 series H&K weapon systems. Used for installing a paddle mag release. Please Note: This is NOT for use on semi-auto HK builds. This...HKP-00847$6.95 -
HK91, G3, PTR Dual Magazine Clamp
HKP HK Parts
$29.95HK91, G3, PTR - .308/762 Dual Mag Clamp The HK91, G3 magazine grip or dual magazine clamp. Holds two magazines together for ease of use and easy access to 2 magazines. Half the weight of the factory mag clamp. HK Parts highly recommends this mag...HKP-19634$29.95 -
HK MP5, HK90 Series Push Pin Spring
USA
$1.95Replacement Spring for HK style push pin - Small A must have replacement item to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn-out springs that come loose while in...HKP-20368$1.95 -
HK Standard Stock Buttpad - OD Green - Surplus
H&K Heckler & Koch
$2.95H&K Standard Stock Buttpad - OD Green - Surplus HK German manufactured surplus A2 style stock buttpad in dark OD green. Used in fair condition. Compatible With: G3 & HK91HKP-17364$2.95 -
HK Picatinny Rail For HK Receivers - 17 Slot
HKP HK Parts
$69.95HKP Picatinny Rail For HK Receivers - 17 Slot Mil-Spec all steel Picatinny rail in the white. Relief cut for HK receivers and made for mounting scopes and optics to HK builds. This unit easily welds to the top of your HK receiver. Compatible With: HK...HKP-01446$69.95 -
HK MP5, HK90 Series Ejector Axle Spring Ring - SEF, Ambi
USA
$1.95Ejector Lever Axle Retaining Spring This is the perfect spring ring to replace your worn out ejector lever axle spring ring. Made to HK spec for the best US replacement part on the market. Replacement of the retaining spring clip is necessary to keep...HKP-20629$1.95