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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HK91, G3 Caliber Conversion Kit - .22LR - BLEMISHED
H&K Heckler & Koch
$945.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - BLEMISHED THESE KITS INCLUDE A BENT BARREL AND ONE MAGAZINE. BLEMISHED PARTS ARE SOLD AS IS. THIS KIT IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Convert any HK91 or HK...HKP-01147-B$945.95 -
HK416, MR556 Enhanced Buffer Tube - Tan
H&K Heckler & Koch
$192.95Tan HK 416, MR556 OTB (over the beach) Buffer Tube, Receiver Extension - Commercial Genuine HK German-manufactured 416 & MR556 latest generation, marine environment & and over-the-beach buffer tube. Each commercial buffer tube features built-in...HKP-22086$192.95 -
HK33, HK53, HK93 SBA5 Pistol Stabilizing Brace and Adapter
SB Tactical
$319.95SB Tactical HK 93/33/53 SBA5 Pistol Stabilizing Brace with Adapter SB Tactical combined with our HK 93/33/53 end cap creates a true drop-in brace, perfect for those seeking the flexibility that the SBA5 pistol stabilizing brace offers. With a 5-position...HKP-22069-M$319.95 -
HK MR556 A4 Complete Upper - F/A & Ejection Door
H&K Heckler & Koch
$845.95H&K HK MR556 A4 Complete Upper w F/A Ejection Door The H&K MR556 A4 Complete Upper is a superior factory assembly that comes fully equipped with a forward assist and an ejection port door, providing unparalleled reliability and precision. This...HKP-21929$845.95 -
HK MP5K .40/10mm Folding Stock with Adapter
HKP HK Parts
$239.95HKP HK MP5K .40/10mm Folding Stock with Adapter Genuine H&K UMP folding stock completely assembled with the HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling attachment point. Available exclusively at HK Parts. Compatible...HKP-21893$239.95 -
On Sale
HK MP5 Locking Piece - 100 Degree - Standard Oversized - BLEMISHED - Gunsmith Special
USA
Now: $9.95Was: $33.95HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special This US-made MP5 100 degree locking piece is the correct locking piece for all HK MP5-style forearms. This locking piece has also now become the factory correct locking...HKP-99116Now: $9.95Was: $33.95 -
HK21E, HK23E Compression Springs - Inner Buffer, Outer Buffer
H&K Heckler & Koch
$59.95H&K HK21E/23E Inner & Outer Buffer Compression Springs An unissued set of inner and outer buffer compression springs for your HK21E/23E buffer, sourced directly from HK Germany. Most HK21E/23E buffers in the U.S are first-generation, which use...HKP-21856$59.95 -
HK MP5K Brace With Direct Fit Adapter - 10mm / .40 S&W
HKP HK Parts
$239.95HKP HK MP5K .40/10mm Brace with Direct Fit Adapter Designed to adapt UMP style and SB Tactical braces directly to the 40/10 K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40/10mmHKP-21835$239.95 -
HK G3 Front Sight Ring
H&K Heckler & Koch
$7.95H&K HK G3 Front Sight Ring Factory HK replacement front sight ring. Compatible With: HK G3HKP-21641$7.95 -
HK MP5SD, MP5K Locking Piece - 120 Degree - .40 S&W, 10mm
RCM
$44.95RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece Compatible With: MP5, MP5K MP5SDHKP-21524$44.95 -
HK91, G3 Extractor - Used
H&K Heckler & Koch
$6.85HK German HK G3, HK, 91 & PTR 91 .308 Extractor - Used Surplus HK German extractor. Fits all models of HK G3 style firearms and CETME's. Compatible With: HKG3 HK91 PTR models Clones and other custom builds CETME & C308'sHKP-21507$6.85 -
Out Of Stock
HK MR762 Factory Flash Hider - 15x1 RH
H&K Heckler & Koch
$54.95H&K HK MR762 Factory Flash Hider - 15x1 RH Factory flash hider with 15x1 right-hand threads. Perfect for completing a build or replacing a worn or missing part. Compatible With: HK MR762HKP-21481$54.95