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 Stock
HK UMP Stock Block B Push Pin
HKP HK Parts
$34.95Stock Block B Sling Pin With Loop washer & Quick Pull Pin for UMP/USC (.40 S&W/ .45 ACP/9mm)HKP-21249$34.95 -
Picatinny 9" Stock with 1913 Folding Mech
JMAC Customs
$309.90JMAC Universal Picatinny 9" Stock with 1913 Folding Mech Feautures: NEW Integrated Rubber Buttpad!! 2x Integrated QD Sling Socket 9" Length 0.275" Cheek Rise Drilled and tapped for optional cheek risers Compatible with JMAC & SIG folding...HKP-21242-BL$309.90 -
On Sale
Full Port Muzzle Brake - 6.5mm - Threaded 5/8x24" - Titanium
Tactical Precision MFG
Now: $42.95Was: $84.99TPM 6.5mm Titanium Full Port Muzzle Brake - Threaded 5/8x24 This lightweight titanium muzzle brake is designed by a master gunsmith and is one of the best on the market. The spiral port outlets along with the parabolic internal taper significantly...HKP-20768Now: $42.95Was: $84.99 -
HK G3 .22 20 Round Conversion Magazine - USED
$199.95HK G3 .22 20 Round Conversion Magazine - USED HK .22 caliber conversion kit 20-round magazine for The G3/91. Ideal for those that have the caliber conversion kit and wants to stack up on spare magazines. Condition is used to like new in the gray paint...HKP-20750$199.95 -
MI Side Folder with Lightweight Stock
MI Midwest Industries
$180.95MI Side Folder with Light Weight Stock Features: Made in the USA Heavy-duty side-folding mechanism constructed from 4140 steel Full-length locking lug for maximum strength Solid positive lock up in both positions Steel clamp with large surface...HKP-20065$180.95 -
Out Of Stock
HK UMP 2 Position Lower Grip Frame
HKP HK Parts
$179.95UMP - 2 Position Lower Grip Frame New UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Each lower fits & works with the 45, 40 & 9mm calibers using...HKP-19382$179.95 -
Out Of Stock
HK G36C Handguard with Tri Rail Set
H&K Heckler & Koch
$199.95HK Heckler and Koch Tri-Rail Handguard Forearm for HK G36C New HK German Factory G36C Forearm with both left and right side rails, bottom rail, and hand stop included. This new style forearm also comes with the heat shield installed. Forearm is made in...HKP-00618$199.95 -
HK MP5 to MP5K Housing Conversion Service
USA
$149.95MP5 to MP5K Housing Conversion Service At HK Parts we are now offering our own HK trigger housing conversion service. No one does a better job with quicker turn around then we do. This conversion is the best option for those that want to install hard to...HKP-20473$149.95 -
HK MP5, MP5K, SP89, HK94 Trigger Pack - SEF Semi - 9mm - Enhanced 5 to 6 lb Trigger Pull
HKP HK Parts
$439.95HKP 9mm SEF Semi Trigger Pack - ENHANCED 5-6 LBS Trigger Pull These trigger packs start as a F/A pack and gets professionally converted to the BATFE specs so you can rest assured the trigger pack is done correctly and to spec. These refinished trigger...HKP-20312$439.95 -
On Sale
Key Mount Tool - Crows Foot Wrench for Dead Air Suppressors
Wasatch Arms
Now: $29.95Was: $54.95Wasatch Arms Key Mount Tool The Dead Air Crows Foot Wrench engages directly on the Key Mount brake allowing proper axial torque for quick and easy installation. Made in the USA and finished in black nitride.HKP-20299Now: $29.95Was: $54.95 -
$14.95 -
Out Of Stock
Folding Stock - SS-8 with 1913 Folding Mech
JMAC Customs
$284.99JMAC Customs SS-8 Folding Stock w/1913 Folding Mech Skeleton stock 8" with 1913 folding mech (not assembled) 2x integrated QD sling socket 8" length Drilled and tapped for optional cheek risers (will be available in the future) Compatible with SIG...HKP-20146$284.99