Rifle / SMG Parts
Elevate Your H&K Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your H&K rifle with top-notch parts and accessories. From MP5 and MP5K to SP5 and UMP/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, SP5K, G36, or MP5 22, we have the H&K rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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H&K HK SL8 Trigger Return Elbow Spring
H&K Heckler & Koch
$9.95HK SL8 Trigger Return Elbow Spring This is the lighter spring weight found only in the SL8 firearms. The G36 trigger return spring is much heavier in weight and thus has a heavier trigger pull over the SL8 trigger pull.HKP-16391$9.95 -
H&K HK53 A3 German Parts Kit - Used
H&K Heckler & Koch
$8,499.95HK German HK53 A3 Factory Parts Kit Complete Minus The Demilled Receiver Includes: HK German desirable 1/7 twist factory cold hammer forged barrel HK ambidextrous 2 round burst trigger group Factory HK 53 wide forearm 4 prong factory flash hider A3...HKP-20729$8,499.95 -
H&K HK94 Red Owners Manual
H&K Heckler & Koch
$18.95HK94 Red Owners Manual Perfect for any HK94 or semi-auto firearms and a great reference guide.HKP-00105$18.95 -
Out Of Stock
H&K MP5 3 Position Navy T/G 0,1,Full - Used
H&K Heckler & Koch
$0.00HK MP5 3 Position Navy T/G (0,1,Full)- USED.A one time deal once sold out there will be no more. Housing conditions will vary but fully functional. They will clean up with some TLC.Factory German HK Complete.*PLEASE NOTE TRIGGER GROUPS WILL COME WITH...HKP-17780$0.00 -
H&K MP5 40/10 +2 Roller
H&K Heckler & Koch
$19.99MP5 40,10 +2 Roller New HK German MP5 40/10 +2 roller. Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair)...HKP-00334$19.99 -
H&K MP5 40/10 +4 Roller
H&K Heckler & Koch
$20.95New HK German MP5 40/10 +4 roller Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a complete set...HKP-00335$20.95 -
H&K MP5 A3 Retractable Stock Sling Attachment Bar- Weldable
H&K Heckler & Koch
$9.95HK MP5 A3 Retractable Stock Sling Bar This part offering is a factory German HK part new unpainted and ready to weld to your application. Can also be used for upgrading a non-ambi stock to an ambi stock by attaching the sling bar to the A3 stock...HKP-17427$9.95 -
Out Of Stock
H&K MP5K 9mm Complete PDW FBI Trigger Group
H&K Heckler & Koch
$799.95H&K MP5K 9mm Complete PDW FBI Trigger Group This is a great upgrade and investment for your factory swing down MP5K or PDW (shown with an optional small push pin installed). New HK German with all the latest HK upgraded parts. Compatible With: HK...HKP-02699$799.95 -
H&K UMP (.40 S&W) Bolt Group - Used
H&K Heckler & Koch
$649.95German UMP .40 factory F/A Bolt Group - Complete This item is used in very good shape or better.HKP-00601$649.95 -
H&K UMP (.40 S&W) Magazine Locking Plate
H&K Heckler & Koch
$9.95H&K UMP (.40 S&W) Magazine Locking Plate German HK.HKP-16340$9.95 -
H&K Universal Harris Bipod Adapter - RAL 8000
H&K Heckler & Koch
$199.95HK Factory Harris Bipod Adapter - Low Profile - RAL 8000 This adapter is used to attach the Harris bipod to any Picatinny rail. Fits all picatinny railed forearms or applications. Features the lowest profile of any bipod adapter we have encountered with...HKP-17750$199.95 -
H&K USC (.45 ACP) Magazine Follower
H&K Heckler & Koch
$12.95H&K USC (.45 ACP) Magazine Follower New HK German USC 10 Round magazine follower.HKP-16346$12.95 -
H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight Spring
H&K Heckler & Koch
$9.95H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight SpringHKP-16516$9.95 -
H&K, B&T HK MP5 Swiss & German Parts Kit With B&T Folding Pistol Brace
$2,399.95HK German MP5 made with Swiss Marked & Proofed HK MP5 Parts Kit Includes: German demilled HK front sight tower assembly and sling loop German HK cocking tube assembly complete German HK trunnion with magwell section attached to the demilled...HKP-19477$2,399.95 -
HDPS HK UMP (.40 S&W/.45 ACP) Birdcage Flash Hider
HDPS
$154.95HDPS HK UMP (.40 S&W/.45 ACP) Birdcage Flash Hider This part is made to fit all US-made or German HK-flanged style barrels. HK no longer makes a flash hider for the UMP Subgun. This is the much anticipated HDPS bird cage style UMP...HKP-02694$154.95 -
Out Of Stock
HK G3 .22 Conversion Magazine
$99.95HK G3 .22 Conversion Magazine HK .22 Caliber Conversion Kit 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 finish that comes in all...HKP-20750$99.95 -
HKP 93/33 (5.56/.223) Key Mod Handguard
HKP HK Parts
$129.95HK93, 33 & PTR Low Profile Key Mod Forearm The KeyMod tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required. Designed from the ground up by roller lock & HK enthusiasts with your shooting...HKP-17179$129.95 -
On Sale
HKP ACE Adapter for HK MP5, 93, 33
HKP HK Parts
Now: $44.95Was: $99.95ACE Adapter for HK MP5 and HK 93 Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive firearm. This is the finest ACE adapter available period...HKP-18504Now: $44.95Was: $99.95 -
HKP Ambi Housing Franklin Armory Binary Selector Set - RAL 8000
HKP HK Parts
$79.95HKP/H&K MP5/K 9mm Ambi Housing Franklin Armory Binary Selector Set - RAL 8000 Elevate your Franklin Armory BFSIII HK Binary Trigger Pack with our new aluminum selector lever set, specifically designed for ambidextrous pictogram housings...HKP-21380$79.95 -
HKP HK 416 .22 LR Flash Hider
HKP HK Parts
$39.95HKP HK 416 .22 LR Flash Hider Enhance your 416.22 pistol with a direct-mount flash hider boasting an elegant Birdcage style for an unmistakable custom appearance. Included O-ring ensures a securely locked flash hider, guaranteeing durability and...HKP-21576$39.95 -
HKP HK 53/51 (5.56/.223) Urbach Style Fluted Barrel Extension - Threaded 15x1 RH
HKP HK Parts
$149.95HKP HK 53/51 (5.56/.223) Urbach Style 8 inch Fluted Barrel Extension - Threaded 15x1 RH This 8" long fluted barrel extension is designed to extend the overall length of a 51 or 53 barrel to meet the 16" legal requirement. Ideal for those using an 8"...HKP-17638$149.95 -
HKP HK 91/G3 (7.62x51/.308) Key Mod Handguard
HKP HK Parts
$149.95HK G3, HK91 & PTR Low Profile Key Mod Forearm The KeyMod tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required. Designed from the ground up by roller lock & HK enthusiasts with your...HKP-17178$149.95 -
HKP HK MP5, MP5K 9mm, Ambidextrous 0,1 Trigger Pack - ENHANCED 5-6 LBS Trigger Pull
HKP HK Parts
$539.95HKP/H&K MP5/MP5K 9mm 2 Position 0,1 Ambidextrous Trigger Pack Our enhanced trigger packs begin as full auto packs and are professionally converted to BATFE specifications, ensuring compliance and quality. These trigger packs are machined to achieve a...HKP-20313$539.95 -
HKP HK MP5K Binary Pistol Build Complete Limited Edition Kit
HKP HK Parts
$3,799.95Limited Edition Parts Kit - MP5K With Binary Trigger Group Our limited edition parts kit will include the highly desirable Binary 3 position Navy trigger group with a universal style housing that will accommodate for a SP5K style semi auto shelf and a...HKP-20025$3,799.95 -
HKP HK MP5K SD Shroud and Handguard Combo
HKP HK Parts
$289.95HKP HK MP5K SD Shroud and Handguard Combo MP5K Shroud and rubber handguard combo. The perfect items for those that are looking into doing a custom MP5K SD build. The finest MP5K SD shroud ever made or available CNC Machined and fully deburred with...HKP-20950$289.95 -
HKP HK SL8/G36 Conversion Stock Block with Picatinny Rail
HKP HK Parts
$129.95HKP HK SL8/G36 Conversion Stock Block with Picatinny Rail SL8 to G36 stock block with Picatinny rail offers superior adjustability for the stock of your choice, making it an excellent choice for SL8 conversion projects. Crafted from billet and cerakoted...HKP-21574-M$129.95 -
HKP HK UMP 5 Prong Ported Flash Hider - 5/8x24
HKP HK Parts
$89.95HKP HK UMP 5 Prong Ported Flash Hider - 5/8x24 5-prong UMP ported flash hider designed for our new UMP 45 parts kit. Not only does it protect exposed threads, it also enhances the appearance of your firearm while delivering flash suppression. Compatible...HKP-21569$89.95 -
HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin
HKP HK Parts
$49.95HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin The original thumb screw version for all stock block B's.HKP-21504$49.95 -
HKP MP5/K 40/10 Locking Piece - Extra Low Impulse
HKP HK Parts
$49.95HKP MP5/K 40/10 Locking Piece - Extra Low Impulse Marked 100 Degree For the MP5 40 or 10mm Firearms. Made out of enhanced material and heat-treated to spec. The #100 degree locking piece is an extra low impulse 40/10 locking piece. To be used with MP5 40...HKP-18273$49.95 -
HKP Single Point Leather Sling - Brown
HKP HK Parts
$49.95Single Point Leather Sling - Brown Our leather sling utilizes two HK style sling hooks to attach to a single mounting point. Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a German...HKP-20161$49.95 -
HKP Single Point Leather Sling - OD Green
HKP HK Parts
$49.95Single Point Leather Sling - OD Green Our leather sling utilizes two HK style sling hooks to attach to a single mounting point. Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a German...HKP-20163$49.95 -
HKP, H&K 19 Round HK Mark 23 / USP .45 ACP Complete Magazine - Black
H&K / HK Parts
$109.95Magazine Extension Complete - 19 Round - HK Mark 23/USP .45 Designed specifically for the Mark 23 and USP .45—perfect for those who want extra firepower at the range. Each magazine comes fully assembled and ready for immediate use. We expertly take...HKP-21586$109.95 -
JMAC Customs 2C H&K G36/HK33 KeyMount (KeyMicro) - Threaded 15x1
JMAC Customs
$89.95JMAC Customs 2C H&K G36 & HK33 (5.56/.223) KeyMount (KeyMicro) - Threaded 15x1 In order to use this device with a suppressor, it must be installed by a professional to ensure it is properly mounted and aligned. Do NOT shoot without checking...HKP-20143$89.95 -
JMAC Customs BDS-37 Blast Diversion Shield - Bravo with HD 3-Lug Adapter
JMAC Customs
$229.95JMAC Customs BDS-37 Blast Diversion Shield - Bravo with HD 3-Lug Adapter The YHM-2050 HD (heavy duty) 3-Lug Adapter is a quick-attach mounting option designed to provide added strength and longevity to your 3-Lug equipped firearm. This fully...HKP-20521$229.95 -
Lancer 30 Round AR15, M4 223 Rem/556NATO Magazine - Translucent
Lancer
$25.95Lancer, L5 Advanced Warfighter Magazine, 223 Rem/556NATO, 30Rd, Fits AR Rifles, Clear Lancer set out to engineer a better magazine; one with the reliability of steel" durability of polymer and weight of aluminum - the L5AWM. The magazine design includes...HKP-19558$25.95 -
Magpul / HKP HK MP5 SSTG
Magpul
$639.95SSTG Magpul trigger group The Single Stage Trigger Group is a blend between the past and future. The trigger pack begins life as a factory German trigger pack before being professionally converted into a semi-auto trigger pack. After the conversion, each...HKP-21261-M$639.95 -
Out Of Stock
Michaels Machines HK PSG1/MSG90 Forward Complete Assist Assembly
Michaels Machines
$679.95US Made Forward Assist Assembly Complete This set includes all of the parts needed for the forward assist. A great set as HK Parts is the only source for the complete forward assist for your HK PSG1, MSG90, HK21E/23E, or your custom build. As shown in...HKP-00852$679.95 -
Nefarious Arms HK 416/MR556 14.5" A5 Barrel
Nefarious Arms
$694.95Nefarious Arms HK 416/MR556 14.5" A5 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or pistol build. Compatible With: HK 416 (A5,...HKP-21590$694.95 -
On Sale
Picatinny to Harris Bipod Adapter - Universal
HKP HK Parts
Now: $14.95Was: $33.95Harris Bipod Adapter This mounts to any Picatinny rail and proves a stable platform to add a Harris bipod or other similar-mounting bipods. This will fit any Picatinny spec rail or rail system. Made in the US out of aircraft-grade aluminum and...HKP-21528Now: $14.95Was: $33.95 -
PTR HK 93/53/33 (5.56/.223) Trigger Group - 5 U.S. 922r Parts
PTR
$389.95HK 93,33,53 5.56/.223 Semi Auto Trigger Group Complete The components that count towards 5 of the 922r compliant parts include the lower housing, trigger pack box, trigger, hammer, and sear. Includes: US Made Sear US Made Hammer US Made Trigger US Made...HKP-16259$389.95