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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Out Of StockOn Sale
HK Linear Compensator - Threaded 5/8x24 RH - (5.56 & .308) - USED
HKP HK Parts
Now: $65.95Was: $149.95HK Linear Compensator - Threaded 5/8x24 RH - (5.56 & .308) - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Linear compensators give you the best of both...HKP-19338-USEDNow: $65.95Was: $149.95 -
On Sale
HK MP5 Sling Swivel Circlip
H&K Heckler & Koch
Now: $4.95Was: $7.95Heckler and Koch Sling Swivel Circlip for HK MP5 Genuine Heckler and Koch sling swivel circlip designed for HK MP5 pattern firearms. This circlip secures the sling swivel assembly to the firearm and provides a correct factory-style attachment point for...HKP-99368Now: $4.95Was: $7.95 -
On Sale
HK MP5 Cocking Tube with Hanger Clip - 9mm - USED
H&K Heckler & Koch
Now: $79.95Was: $109.95Heckler and Koch HK MP5 9mm Cocking Tube with Hanger Clip - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY Rare factory German HK MP5 cocking tube with hanger clip. Compatible With: MP5, 94, SP5 MP5 clones or other custom builds THIS...HKP-99359Now: $79.95Was: $109.95 -
Out Of Stock
HK21, HK23, HK11 Flash Hider - Threaded 15x1 RH
HKP HK Parts
$27.95HKP HK23, HK21, HK11 Flash Hider - Threaded 15x1 RH Steel flash hider designed for HK23, HK21, and HK11 pattern firearms and is threaded 15x1 right hand. Helps reduce visible muzzle flash while maintaining an original-style HK profile. Compatible...HKP-22484$27.95 -
HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm
H&K Heckler & Koch
$12.95HK91, G3 19x1.2mm Retaining Ring for A3 Retractable Buttstocks This 19x1.2 retaining ring (circlip-style) is used in the G3 and HK91 A3 retractable buttstock assembly to help retain the locking components in place for proper fit and function. Compatible...HKP-22482$12.95 -
HK MP5, AP5 Full Auto Sear Spring Spacer
MKE
$1.95MKE Distance Sleeve for HK MP5 and AP5 Features: Precision-machined roller used in traditional roller-delayed trigger packs. Ensures perfect trigger geometry, smooth operation, and long-lasting reliability. Compatible With: HK MP5 Century...HKP-22477$1.95 -
HK MP5K, AP5-P End Cap - Incomplete
MKE
$27.95MKE MP5K, AP5-P - Incomplete MKE manufactured replacement end cap. This end cap does not include the buffer, hardware, or sling swivel. Compatible With: HK MP5K HK SP89 HK SP5K Century AP5-P, AP5-MHKP-22472$27.95 -
HK416, MR556 A4 Hammer Washer
H&K Heckler & Koch
$58.95Heckler and Koch Hammer Washer for HK MR556 OEM hammer washer for HK MR556 and HK416 rifles. Factory-spec replacement washer for the hammer assembly, ideal for repairs, rebuilds, or returning rifles to original HK configuration. Compatible...HKP-22434$58.95 -
HK MR762 A4 Upper Receiver Kit - 16"
H&K Heckler & Koch
$2,449.95HK UPPER RECEIVER KIT MR762 A4 - 16" The MR762 A4 upper kit contains a complete upper receiver and barrel assembly. The closed system design significantly reduces malfunctions typically associated with direct-impingement gas systems, as hot carbon...HKP-22424$2,449.95 -
On Sale
HK MP5K 40/10 Stock or Brace Adapter - BLEMISHED
HKP HK Parts
Now: $84.09Was: $113.95HK MP5K 40/10 Brace/Stock Adapter - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Easily attach your favorite A2 style stock to your MP5K 40/10 with...HKP-21869-BNow: $84.09Was: $113.95 -
HK MR556, MR223 Upper Receiver - BLEMISHED
H&K Heckler & Koch
$695.95HK MR556, MR223 Upper Receiver - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED MISSING FORWARD ASSIST AND GAS PISTON COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE...HKP-16950-BL-B$695.95 -
HK417, MR762 Handguard - 15" - Tropentarn
H&K Heckler & Koch
$488.95Heckler and Koch HK MR762 A4 Complete Handguard - Tropentarn - 15" Factory HK handguard with a 12 o’clock Picatinny rail and M-LOK slots at 3, 6, and 9 o’clock for mounting optics and accessories. Includes dual QD sling sockets for...HKP-99326$488.95