All Parts
At HK PARTS, we bring you a wide array of high-quality H&K accessories and components for your favorite firearms. Whether you're upgrading your H&K pistol or rifle, or even looking for parts kits, we've got you covered. Discover a range of top-rated components for popular models like VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, we have it all. Enhance your firearm's performance and functionality with our premium components.
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H&K HK G36K Forearm - Black
H&K Heckler & Koch
$139.95HK G36K Forearm With Hand Stop & Heat Shield- German HK New HK German latest production HK G36K forearm that has the hand stop and heat shield installed. Also a popular forearm choice for those doing the SL8 to G36 conversions. Has the mounting...HKP-00617$139.95 -
H&K HK MR556/416 Extractor
H&K Heckler & Koch
$76.95HK 416 & MR556 Bolt Head Extractor New HK - German Compatible With: MR556 CR556 HK 416 HK M27HKP-00036$76.95 -
H&K HK MR556/416 Forward Assist Pin
H&K Heckler & Koch
$4.95Forward Assist Pin For MR556 & HK416 PinHKP-02662$4.95 -
H&K MR556 (5.56/.223) Compensator Flash Hider - Threaded 1/2x28
H&K Heckler & Koch
$39.95H&K MR556 (5.56/.223) Compensator Flash Hider - Threaded 1/2x28 Full birdcage style is the real deal. Threaded 1/2x28 for use on all HK 416, MR556 and other AR style applications. Great flash hider. Specifications: Threaded 1/2x28 Compatible...HKP-16926$39.95 -
HK G36, HK SL8 Magazine Paddle Release
USA
$17.95HK G36 & SL8 Magazine Paddle Release HK G36 Mag Release or mag catch. Compatible With: HK SL8 HK G36 HK G36K HK G36CHKP-18222$17.95 -
RCM HK 53 Full Auto Bolt Carrier US
RCM
$359.95Bolt Carrier - US - RCM - HK53 Brand new US manufactured new style HK53 factory bolt carrier. The finest HK53 carrier ever made with the latest & greatest German inspired improvements and updates. Ideal for 556/.223 & .300 BLK firearms...HKP-20538$359.95 -
GSG9 HK G36/SL8 (5.56/.223) Firing Pin
GSG9
$28.95HK G36, G36K, G36C & SL8 Firing Pin - USA A must have spare part for all G36 models. Made in the USA. Fully machined and nitrided for superior strength. Compatible With: G36 G36K G36C SL8HKP-18256$28.95 -
H&K HK MR556/416 Fire Control Detent Stop Pin
H&K Heckler & Koch
$16.95H&K HK MR556/416 Fire Control Detent Stop Pin HK German.HKP-15272$16.95 -
H&K HK SL8, G36, Sight Rail w/ Flip Up Sights
H&K Heckler & Koch
$598.95HK Sl8, G36 Aluminum Sight Rail With Front & Rear Flip Up Sights New production German HK HK Sl8, G36 picatinney rail with flip up front and rear sights. The latest production rail option from HK. All metal and built to take a lifetime of use and...HKP-17718$598.95 -
$79.95 -
HK G36/SL8 (5.56/.223) Cocking Handle Axle Pin
$10.95HK G36, SL8 Cocking Handle Axle Pin - US Made This is the rivet pin that is used to attach the swiveling cocking handle to the body of the carrier. These can be replaced as they break and wear. Compatible With: HK G36 models HK SL8 modelsHKP-18367$10.95 -
GSG9 HK G36K Forearm - Black
GSG9
$120.95HK G36K Forearm With Hand Stop & Heat Shield HK G36K length latest production HK G36K handguard with built in heat shield. Each unit features a built in hand stop with sling attachment points. Built in hard mounting points for adding picatinney rails...HKP-18217$120.95 -
HDPS HK SL8 Conversion Stock Block
HDPS
$389.95HDPS SL8 To G36 Stock Block This is the latest generation of a stock block with the pull pin, NOT the older style with the sling eyelets. The HDPS SL8 to G36 conversion stock block comes complete and includes a built-in buffer recoil rod, housing, steel...HKP-00807$389.95 -
HK G36/MR556/416 (5.56/.223) Chamber Cleaning Brush
HKP HK Parts
$24.95HK G36 & HK SL8 German Chamber Cleaning Brush (Cleans INSIDE Chamber) More details...HKP-00803$24.95 -
Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston
Nefarious Arms
$64.95Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated gold for added protection and an overall great part. Compatible...HKP-21364$64.95 -
B&T HK G36K (5.56/.223) Quad Rail Handguard
B&T Brugger & Thomet
$329.95Swiss Made B&T Quad-Rail (4 Sided Picatinny Rail) Handguard For HK G36K Aluminum version with rail cover and sling swivel. The B&T offering is the finest railed hand guard available for the HK G36K or SL8 conversions to G36K spec.B&T...HKP-16895$329.95 -
GSG9 HK416, MR556 Firing Pin
GSG9
$34.95Firing Pin for HK 416 & MR556 Firearm - USA - GSG9 New US made HK 416 & MR556 Made from hardened stainless steel. Compatible With: HK416 HK MR556 HK CR556 HK M27HKP-20650$34.95 -
H&K 93/53/33 (5.56/.223) 25 Round Magazine Spring
H&K Heckler & Koch
$11.95HK 93, 33, & 53 Magazine Replacement Spring For 25-Round Magazines Hard to find and a must-have spare for your HK mags. No longer in production.HKP-00483$11.95 -
Out Of Stock
H&K 93/53/33 (5.56/.223) Magazine Catch - Latest Design
H&K Heckler & Koch
$49.95HK German Factory HK93, 33, 33K & HK53 Ejector Lever New HK German 93,33,53 mag catch for magazine release. Compatible With: HK93 HK33 HK53 HK33K Clone or other custom buildsHKP-01059$49.95 -
H&K G36/SL8 (5.56/.223) Cocking Handle
H&K Heckler & Koch
$55.95HK Cocking Handle For G36 & SL8 Bolt CarriersHKP-01853$55.95 -
H&K HK G36/SL8 Complete Recoil Rod Assembly
H&K Heckler & Koch
$49.95Recoil Rod Assembly for HK G36 & SL8 New HK factory German G36/SL8 (fits all variants of SL8/G36) recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find.HKP-01057$49.95 -
H&K HK G36C Complete Rear Stock Assembly - Black
H&K Heckler & Koch
$199.95HK G36C Rear Stock Assembly Complete - German Genuine German Heckler & Koch G36C rear stock assembly. One full inch shorter than the standard G36 stock. This is the preferred stock for average-height users. Compatible With: G36 G36K G36C SL8...HKP-00626$199.95 -
H&K HK MR556/416 Enhanced Field Cleaning Kit
H&K Heckler & Koch
$169.95HK HK416/ MR556 (all variants & models) field cleaning kit- Enhanced Cleaning kit made both the HK 416, MR556 series of rifles and MG's. Includes: Saf-T-Clad Cleaning Rod HK Carbon Scraping Tool Accessory Adapter Section #8-32 Patch Holder Chamber...HKP-17061$169.95 -
H&K HK MR556/416 Extractor Spring Buffer
H&K Heckler & Koch
$11.95HK 416, MR556 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 & HK416 Firearms.HKP-00051$11.95 -
H&K HK SL8-1 Complete Front Sight - Black
H&K Heckler & Koch
$79.95H&K HK SL8-1 Complete Front Sight - Black Complete front sight, less the mounting hardware.HKP-16633$79.95 -
H&K HK SL8/G36 Front Sight - Black
H&K Heckler & Koch
$19.95HK German SL8/G36 (G36,G36K,G36C & SL8) Front Sight Post - New This item is the replacement polymer front sight post for the HK sight rails.HKP-00638$19.95 -
$5.95 -
HK G36/SL8 Complete Recoil Rod Assembly
USA
$39.95Recoil Rod Assembly For All - HK G36 & SL8 New G36/SL8 recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find. Made in the USA. Compatible With: G36 SL8HKP-18539$39.95 -
HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel
HKP HK Parts
$24.95HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steelHKP-17798$24.95 -
AIM HK 93/33 (5.56/.223) Carbine Length Handguard - M-LOK
AIM
$85.95HK 91, PTR RIFLE LENGTH HANDGUARD - M-LOK This sleek streamlined design is an ultra low profile handguard with generous mounting space to accept all M-LOK accessories. Superior ergonomics and simple, drop-in installation makes this the best HK pattern...HKP-18177$85.95 -
H&K 23E (5.56/.223) Bolt Carrier
H&K Heckler & Koch
$799.95New HK German 23E .223 & 5.56 Bolt Carrier Date coded and marked HK23-E. These are the last HK23E carriers that HK Germany has left. We are told that once these are gone, there will be no more. They are a great spare part to have, and they are...HKP-00330$799.95 -
H&K 53/51 (5.56/.223) Vented Handguard - Vertical
H&K Heckler & Koch
$119.95HK German HK 53, HK 51 Vented Hand Guard - Vertical Style This HK German part is the proper length for use on the HK 53 or HK51 length receivers. The vented hand guard is vented on all 3 sides to promote barrel cooling as well as provide an aggressive...HKP-00469$119.95 -
H&K G36/SL8 (5.56/.223) Bolt Catch
H&K Heckler & Koch
$24.95HK G36 & SL8 Bolt Catch On AR-15 systems this part would be similar to a cam pin. Compatible With: G36 G36K G36C SL8 variantsHKP-02472$24.95 -
Out Of Stock
H&K HK G36 Mag Well - Black
H&K Heckler & Koch
$69.95HK G36 High Capacity Magazine Well It will fit all factory G36 magazines as well as the Magpul G36 mag as well. This item is a new HK factory German production. This item is also a needed enhancement when doing the SL8-G36 conversion.HKP-00625$69.95 -
H&K HK MR556/416 Semi Auto Axle For Selector Lever
H&K Heckler & Koch
$119.95H&K HK MR556/416 Semi Auto Axle For Selector Lever HK German safe, semi selector axle for the MR 556 & HK 416 family of firearms. All steel construction.HKP-15433$119.95 -
H&K HK416, MR556 12.5" M-LOK Compatible Handguard
H&K Heckler & Koch
$299.95Heckler & Koch MR556 & HK 416 - 12.5" M-LOK Handguard Manufactured by HK from aircraft grade aluminum with a black hard coat anodized finish, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles chambered in...HKP-19695$299.95 -
HK G36/SL8 Extractor
USA
$67.95G36 & HK SL8 Extractor For Bolt Head This is a great item to keep as a spare. Compatible With: All G36 variants SL8-1, SL8-6HKP-18882$67.95 -
HKP 93/53/33 (5.56/.223) Trigger Group - 2 Position Housing 0,1 - Safe, Semi Only
HKP HK Parts
$549.95HKP 93, 33, 53 Trigger Group 2 Position Housing 0,1 - Safe, Semi Only Our trigger group offering is the most desirable HK 93,33,53 trigger group available. Now you can upgrade your HK firearm to have the look & feel of the 4 position burst lower with...HKP-17246$549.95 -
HKP HK MR556/416 Barrel Mandrel Tool
HKP HK Parts
$169.95HKP HK MR556/416 Barrel Mandrel Tool US Made - HK 416, MR556 Barrel Mandrel Tool.HKP-19059$169.95 -
Out Of Stock
Nefarious Arms HK 416/MR556 10.4" A3 Barrel
Nefarious Arms
$694.95Nefarious Arms HK 416/MR556 10.4" A3 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. Proudly made in the...HKP-21335$694.95