HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HK MR762 A4 Buffer Tube
H&K Heckler & Koch
$95.95H&K MR762 A4 Buffer Tube Factory German-made buffer tube for the MR762 A4. Compatible With: HK MR762 A1/A4HKP-21964$95.95 -
On Sale
HK21 Firing Pin - USED - BLEMISHED
H&K Heckler & Koch
Now: $39.95Was: $79.95H&K 21 (7.62x51/.308) Firing Pin - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Compatible With: HK21HKP-00546-BNow: $39.95Was: $79.95 -
On Sale
HK G3 Buttpad - USED
USA
Now: $4.95Was: $14.95HK G3 Buttpad - USED HK G3 buttpad, condition will vary from part-to-part vs. the pictured unit. Compatible With: HK G3 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.HKP-99071Now: $4.95Was: $14.95 -
HK416, MR556 Buffer Tube
H&K Heckler & Koch
$176.95H&K HK416, MR556 Complete Receiver Extension/Buffer Tube Genuine German complete receiver extension for the HK416 5.56/.223 platforms. Compatible With: HK416 MR556 ***Packaging may say "G26". This was a typo by HK.HKP-21872$176.95 -
HK11 Recoil Spring
H&K Heckler & Koch
$18.95H&K HK11 Recoil Spring This German-made HK11 recoil spring is longer than the standard G3 springs but has the same pattern. As a project spring, this part can be cut down for use on G3 and HK33-type recoil rods. Many U.S.-built HK11's use G3 springs...HKP-21858$18.95 -
On Sale
HK MP5 Cocking Tube - Extrusion - 4" - Gunsmith Special
USA
Now: $14.95Was: $39.95HK MP5 4" Cocking Tube Extrusion - Gunsmith Special This 4" cocking tube extrusion is ideal for custom HK-style firearm builds, repairs, or refurbishments, providing a solid foundation for restoring or fabricating cocking tubes on HK MP5, G3, and similar...HKP-99060Now: $14.95Was: $39.95 -
HK21E, HK23E Hammer, Strut Assembly
H&K Heckler & Koch
$339.95H&K HK21E/23E Hammer & Strut Assembly This original HK hammer and pinned strut assembly is sourced directly from Germany, providing the correct replacement or perfect upgrade for your HK21E or HK23E. Most U.S. HK21E/23E-style firearms are...HKP-21855$339.95 -
On Sale
HK MP5 9mm Dual Folding Stock w/ Adapter
HKP HK Parts / Strike Industries
Now: $274.95Was: $319.95Strike Industries HK MP5 9mm Dual Folding Stock w/Adapter The Strike Industries Dual Folding Stock paired with the HKP MP5 picatinny adapter is one of the best options on the market for those looking for a light, compact folding stock configuration...HKP-21768-MNow: $274.95Was: $319.95 -
Out Of Stock
B&T Blast Deflector - Rotex IIA Interface - Glass Breaker
B&T Brugger & Thomet
$280.00B&T Blast Deflector with Glass Breaker - Rotex IIA Interface B&T blast deflector with glass breaker features a Rotex IIA Interface, designed to work with non-Pro APC223 and APC308 muzzle devices. Compatible With: B&T APC223...HKP-21776$280.00 -
On Sale
HK G36, HK SL8 Side Rail Factory HK - Black - BLEMISHED
H&K Heckler & Koch
Now: $34.95Was: $67.95HK G36, HK SL8 Side Rail Factory HK - Black - BLEMISHED SCRATCHES. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Up to two side rails can be used on a G36 UMP,...HKP-01962-BNow: $34.95Was: $67.95 -
HK MP5, SP5 Barrel - 9mm - 3 Lug - New Old Stock - Rare
H&K Heckler & Koch
$987.95H&K HK MP5/SP5 3 Lug Barrel - New Old Stock - Rare Factory German date coded with H&K logo. This new old stock 3-lug item is incredibly rare and in pristine condition. An absolute gem in the market. We only have a limited number available, and...HKP-21662$987.95 -
Out Of Stock
HK416, MR556 Flash Hider - Threaded 1/2x28
B&T Brugger & Thomet
$125.00B&T Brugger and Thomet's Flash Hider - for 5.56mm NATO caliber weapons threaded 1/2x28 Factory B&T 1/2x28 flash hider for 5.56 rifles. Compatible With: HK 416 HK MR556 HK MR223 B&T APC223 AR-15 M16 5.56 / .223 firearms threaded...HKP-21757$125.00