Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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HK G36, SL8 Locking Push Pin for Handguards, Lowers, Magwells
GSG9
$18.95HK G36, SL8 Push Pin For Forearm, Magwell, & Lower Each push pin/locking pin retains the forearm, magwell, & lower to the upper receiver. Each G36 style firearm uses a total of 3X of these push pins. Compatible With: G36 G36K G36C G36...HKP-18221$18.95 -
HK53 Cocking Tube
HKP HK Parts
$139.95HKP 53 (5.56/.223) Cocking Tube New cocking tube made in the US. Made to the exact HK specifications as the factory HK53 German cocking tube. This is the only factory-correct HK53 cocking tube available, as HK Germany does not offer this part separately...HKP-00197$139.95 -
HK416, COLT M4 Magazine Spring - .22LR - 30 Round
HKP HK Parts
$3.95HK 416 & Colt .22 30 Round Magazine Spring A good supply of spare mag springs is a must. These are ideal to have on hand as the spring can become damaged or worn out. Compatible With All 30 Round .22 Mags For: HK 416 Colt M4 G36HKP-14409$3.95 -
HK416, HK417, MR556, MR762 German E1 Convex Butt Pad
H&K Heckler & Koch
$64.95HK MR556, HK416 & MR762, HK417 German E1 Convex Butt Pad The HK Convex buttpad can be used to swap out on the factory E2 or concave-style buttpads for those who desire this option. This way, you can use the concave or convex-style buttpads...HKP-01915$64.95 -
HK416, MR556, HK417, MR762, G28 Pistol Grip - V2
H&K Heckler & Koch
$75.99H&K HK MR556/MR762/416/417/G28 V2 Battle Grip With Contoured Back Strap HK-manufactured AR15-style pistol grip will fit all AR-15/M-16 lower receivers as well. It is a great upgrade for any AR15, M16/416 style firearm. Provides...HKP-01912$75.99 -
HK MP5 Handguard - M-LOK - Extended Length
UTG PRO
$197.95 - $245.95UTG HK MP5 PRO Monolithic M-LOK Handguard - Extended Length The UTG PRO extended monolithic M-LOK handguard builds on the original with added real estate out front for mounting accessories. Where the original stops before the front sight,...HKP-21673-M$197.95 - $245.95 -
HK G3 Standard Stock Buttpad - Like New
H&K Heckler & Koch
$11.95H&K Standard Stock Buttpad - Like New This HK German-manufactured stock buttpad in dark OD green is the ultimate replacement for your worn-out or broken buttpad on your G3 A2 fixed stock. Handpicked to ensure the highest quality part possible...HKP-21479-M$11.95 -
On Sale
Sig P320 +5 Magazine Extension
Tactical Precision MFG
Now: $19.95Was: $44.95TPM Sig P320 +5 Magazine Extension This extension is made from machined 6061 aluminum. This magazine extension will increase the capacity, reload speed, mag drops, and overall functionality of your pistol. Available in various colors to customize to your...HKP-21135-MNow: $19.95Was: $44.95 -
Out Of Stock
HK416A5, MR556, MR762 Rail Cover Set - RAL8000
H&K Heckler & Koch
$69.95H&K HK MR556/MR762/HK416 A5 Rail Cover Set - RAL 8K Brand new Heckler & Koch HK 416 A5 Style Picatinny rail covers made of high impact HK polymer. Each rail is equipped with a quick release tab & marked with the HK logo...HKP-17705$69.95 -
B&T 9mm 30 Round Magazine - Translucent w/Bumper
B&T Brugger & Thomet
$49.95B&T 9mm 30 Round Magazine - Translucent w/Bumper B&T factory 30 round 9mm magazine made of high strength semi-transparent polymer. Compatible With: B&T MP9/TP9 B&T APC9 B&T SPC9 B&T GHM9 B&T KH9 ***NOT compatible with...HKP-21710$49.95 -
HK MP5, HK94 Slimline Handguard
H&K Heckler & Koch
$69.95H&K HK MP5 & HK 94 Slimline Forearm Used German military slimline forearm refinished and cerakote in a black finish. Modified to fit the MP5 & SP5. These are rare items only offered here at HK Parts. Each item is in good to...HKP-20274-M$69.95 -
HK Single Point Leather & Cotton Sling
HKP HK Parts
$59.95Single Point Leather & Cotton Sling 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...HKP-21321-M$59.95