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 Telescopic Stock
MKE
$349.95MKE Telescopic Stock for HK G3 and HK91 The MKE telescopic G3 stock is an easy-to-install replacement stock system for HK G3-style firearms. The simple lock/release system is easy to operate, allowing shooters to quickly adjust stock length. Steel rails...HKP-21182$349.95 -
HK Trip Lever- Friction - Used - Surplus
H&K Heckler & Koch
$3.74H&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 HK trigger packs and all HK registered sear packs.HKP-17760$3.74 -
HK91, G3, HK93 Stock or Brace Adapter - with Mil-Spec AR Buffer Tube
HKP HK Parts
$124.95HKP HK Mil-Spec AR Brace/Stock Adapter & Buffer Tube AR15 to HK 90 series stock adapter for AR15 stocks that includes the mil-spec buffer tube and castle nut to use any mil-spec AR15/M16 stock of your choice on your HK rifle or SBR build. With the...HKP-16583$124.95 -
HK91, G3 Magazine - 20 Round - 7.62x51/.308
Thermold
$19.95Thermold HK91, G3 Magazine - 20 Round - 7.62x51/.308 - US Made This US-made magazine is made of space-age polymer. Also, it counts as three US-made compliance parts. Each magazine features a fail-safe follower non-corrosive (polymer magazine body)...HKP-02612$19.95 -
HK91, G3 Firing Pin Spring
H&K Heckler & Koch
$9.95HK German HK G3, HK91, & PTR Firing Pin Spring This is a common repair and replacement item and is great for spares as this is a common breakage part.HKP-00498$9.95 -
HK MP5, HK53 Locking Roller for Bolt Head - 9mm - 8.02mm
H&K Heckler & Koch
$39.95H&K +2 Roller For Bolt Head 8.02mm - Over-sized New HK standard (8.02 mm) locking roller. The proper roller size is essential for a proper bolt gap. New HK German, not surplus or used out-of-spec part. Please Note: The price listed is per roller...HKP-00507$39.95 -
HK Replacement Screw for BFS Selector Levers
HKP HK Parts
$1.98HKP Binary Selector Lever Set Screw This replacement screw is to mount your Franklin Armory BFS selectors. A great spare screw to replace damaged screws or lost screws as they are small in dimension and very easy to misplace. A must have set screw to...HKP-20686$1.98 -
Out Of Stock
Picatinny Optic Rail - Claw Adapter
UTG PRO
$14.95HK Claw Mount To Picatinny Style Rail This part allows all STANAG style scopes to accept the universal Picatinny style rail. Each rail adapter comes with rail and mounting hardware. This part adds 6 1/8 inches of rail space to the top of your claw mount...HKP-02042$14.95 -
HK91, G3 Full Length Handguard - M-LOK
AIM
$99.95HK 91 RIFLE LENGTH HANDGUARD- M-LOK This sleek streamlined design is an ultra low profile handguard with generous mounting space to accept all M-LOK accessories. Superior ergonomics and simple, drop-in installation makes this the best HK pattern rail on...HKP-18176$99.95 -
HK91, G3 Handguard - M-LOK
HKP HK Parts
$159.95 - $169.95HK G3, HK91 & PTR Low Profile M-LOK Forearm The HKP M-LOK tactical handguard installs easily to provide a solid base to mount M-LOK accessories. Designed from the ground up by HK enthusiasts with tactical shooting requirements in mind...HKP-17265-M$159.95 - $169.95 -
On Sale
HK Contract 3 Point Sling - OD Green
H&K Heckler & Koch
Now: $39.71Was: $52.95HK Contract 3 Point Sling - OD Green HK contract 3 point sling NIW. This is the best valued HK 3 point sling available for the HK 90 series of firearms. HK Green in color.HKP-19184Now: $39.71Was: $52.95 -
HK91, G3, MP5 Pistol Grip
AC-Unity
$9.95AC-Unity HK G3 Pistol Grip Beautifully designed and textured for a great feel and sure grip. Also correct for HK33 or MP5 style weapons using steel trigger housings with buttstocks mounted with steel backplates. Constructed from advanced...HKP-21629$9.95