Parts Kits
Complete Your H&K Firearm with Parts Kits - MP5, G36, HK416, and More!
Explore our comprehensive selection of H&K parts kits for your firearm needs. Whether you're into MP5, G36, HK416, G3, UMP, HK417, MR556, or MR762, we have the perfect parts kits to complete your H&K firearm. Don't compromise on quality; choose the best for your weapon. Browse our selection now to find the ideal parts kits for your H&K firearm.
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HKP HK 416, Colt M4 .22 Match Trigger Upgrade Spring Kit
HKP HK Parts
$17.49HK 416 .22 & Colt M4 - .22 Match Trigger Spring Kit - Set of 3 Enhanced Springs: The HK Parts Match drop-in spring upgrade set will enhance your HK 416's trigger pull to an even smooth, crisp, and lighter pull that will promote better control,...HKP-17340$17.49 -
PTR HK 91/G3/51 (7.62x51 / .308) Flat With Weldment Set
PTR
$166.95HK91, G3, PTR, CETME Flat & Weldment Combo - PTRBrand New HK91/G3/PTR91 or CETME receiver flat with brand new US weldment set offered as a complete package. Made by PTR91 on original HK tooling using factory specifications and a properly stamped...HKP-02086$166.95 -
HKP MP5/HK94 Complete Weldment Set For Receiver Flat
HKP HK Parts
$49.95HKP MP5/HK94 Complete Weldment Set For Receiver Flat This is the finest, most correct weldment set for your HK MP5, 94 project available. Each Weldment Kit Contains: 1x Semi Auto Shelf Hanger Block 1x Rear stock bushing 1x Scope mounting piece 1x...HKP-01453$49.95 -
LSC/PTR Receiver Flat- MP5 9mm
LSC
$224.95MP5 Receiver Flat - PTR/LSC New PTR 9mm Receiver Flat made on the original LSC tooling. This flat is considered by many to be the most sought-after HK flat available on the market and perfect for that HK custom build. This item is not considered an FFL...HKP-01431$224.95 -
HKP SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
HKP HK Parts
$74.95HK SP5K Anti-Rattle Roller Tipped "Paddle" Magazine Release Install Kit No modifications, no refinishing...complete drop-in kit included. New USA made busing for a drop-in install kit for the HK SP5K. This kit will allow any end-user to quickly,...HKP-18192$74.95 -
LSC MP5 9mm Receiver Flat
LSC
$199.95MP5 Receiver Flat -LSCLSC HK MP5 receiver flat is the most in spec flat that has ever been available. The best option for your HK German parts kit build.This flat is considered by many to be most sought after HK flat available on the market and perfect...HKP-20555$199.95 -
H&K G3 Parts Kit - PTR Barrel & Flat
H&K Heckler & Koch
$799.95HK German G3 .308/7.62 X 51mm Surplus Parts Kit, PTR Barrel, Flat HK German G3 .308/7.62 X 51mm Surplus Parts Kit, PTR Barrel, FlatFinally, after more than 4 years of searching the globe we have HK German Surplus G3 parts kits available to offer. Each...HKP-16579$799.95 -
Out Of Stock
HKP HK 91 Polymer To Metal Trigger Group Conversion Kit
HKP HK Parts
$199.95HK 91/PTR 91 Polymer To Metal Trigger Group Conversion Kit. This is everything you will need to convert the lower trigger group on your HK 91 from polymer to metal housing with contoured grip. Just use your existing trigger pack to complete the...HKP-17362$199.95 -
PTR HK MP5 Flat Receiver w/ Weldment Set
PTR
$289.95MP5 9mm Receiver Flat With Complete Weldment & Rivet Set - PTR/LSC Several years ago PTR bought out LSC and now owns the tooling and dyes for the LSC 9mm flats. These elusive flats have been hard to find and are now available for the first time here...HKP-19509$289.95 -
HKP HK 91/G3 (7.62x51 / .308) US Made Trigger Pack - 4 U.S. 922 Parts
HKP HK Parts
$249.95Semi Auto Trigger Pack G3, 91 & PTR Models - 4 US 922R PartsHK G3, 91 & PTR .308 Semi Auto Trigger Pack Complete. Works with all 7.62 & .308 HK style firearms. Each Trigger Group Incorporates The Following US Made Compliant Parts Completely...HKP-17949$249.95 -
Out Of Stock
FMP - G3 Parts Kit - With Mags
HKP HK Parts
$324.95HK Contract Portuguese FMP (Fábrica Militar de Portugal) G3 .308/7.62 X 51mm Surplus Parts Kit The G3 has been an iconic Battle rifle utilized all over the world and revered as one of the best that H&K has offered. You now have the opportunity...HKP-20865$324.95 -
Kinetic Development Group HK USC Conversion to ACR Stock Upgrade - FDE
$459.95HK USC-UMP ACR Stock Adapter & ACR Stock Combo - BrownA new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. Each unit comes complete with the ACR stock, hinge pin, sling mount and...HKP-19845$459.95 -
H&K Magazine Release Set
H&K Heckler & Koch
$184.95Complete magazine paddle mag release kit that includes both the paddle mag release & standard left to right mag release on your HK 9mm rifle or pistol build. All mag release parts are new HK German factory fresh latest production and the new F style...HKP-02402$184.95 -
Out Of Stock
HKP MP5 SD 9mm Front End Kit
HKP HK Parts
$0.00HK MP5 SD Front End Build Kit - ON SALE! HK MP5 SD Front End Build Kit. Each Kit Comes With Everything Need To Build An MP5 SD Front End With The Exception Of The Actual Suppressor.Each kit consists of all new HK Parts featuring the finest USA (HK PARTS)...HKP-02399$0.00 -
On Sale
FN-FNS .40 S&W Pistol Parts Kit
FN
Now: $344.95Was: $399.95FN FNS -40 Cal Pistol Parts Kit Kits comes complete less the lower receiver. Each kit was handpicked and comes in in the factory hard case as pictured. Complete slide assembly with firing pin and extractor assemblies Recoil rod assembly Cold...HKP-19741Now: $344.95Was: $399.95 -
Out Of Stock
HKP HK G36C Barrel Front End Kit
HKP HK Parts
$889.95G36C Barrel Front End Barrel Kit - 223/556 New production HK G36C style barrel conversion kit and front end kit. Each kit will include the necessary parts to build a G38/SL8 variant into the G36KC barrel length variant as pictured. All you need is this...HKP-18228$889.95 -
On Sale
HKP MP5K/SP89/SP5K 9mm Receiver Flat
HKP HK Parts
Now: $139.95Was: $159.95HK U.S Made MP5K, SP5K, & SP89 Receiver Flat HK MP5K receiver flat (no FFL required) as these are flats and are not considered receivers until the flat is rolled. These are the latest generation flats that have all of the latest improvements. Just...HKP-00768Now: $139.95Was: $159.95 -
H&K G3 (7.62x51 / .308) Parts Kit
H&K Heckler & Koch
$524.95HK German G3 .308/7.62 X 51mm Surplus Parts Kit Each parts kit comes with all parts from a functional HK G3 full auto rifle that was demilled into a parts kit except for the barrel and receiver. Each part of the parts kit will vary from fair to excellent...HKP-00827$524.95 -
H&K HK G3/HK 91/PTR Parts Kit - PTR Barrel, Flat - Handpicked
H&K Heckler & Koch
$1,199.95G3, 91 Hand Picked Parts Kit - Barrel, Flat Handpicked stock set Handpicked housing, grip Handpicked magazine Handpicked end date coded bolt group New cocking tube included Full-Auto Bolt Group Please note: Each part in the G3 parts kit will vary in...HKP-20071$1,199.95 -
Taiwanese T65 Retro Parts Kit
$1,199.95Taiwan - T65 Gas Piston Rifle Parts Kit Limited one time offering first time ever offered here in the USA. This is an extremely rare offering and only a very limited number of kits are available. Each kit was used in Central & South America during...HKP-19676$1,199.95 -
FMP HK G3 (7.62x51 / .308) Parts Kit (HK Contract)
FMP
$429.95HK Contract Portuguese FMP G3 .308/7.62 X 51mm Surplus Parts Kit Finally, after more than 4 years of searching the globe, we have HK FMP Surplus G3 parts kits available to offer. Each parts kit comes complete with all parts from a functional HK G3 full...HKP-17694$429.95 -
HKP MP5-SD 9mm Pistol Build Kit With Flat, Top Rail & Weldment Set
HKP HK Parts
$2,499.95MP5 SD 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a pistol (N/A) rifle, or SBR build.This is the first time that these iconic kits have...HKP-18052$2,499.95 -
HKP MP5K 9mm Complete Pistol Build Kit
HKP HK Parts
$2,099.95MP5K, MP5K-N Style Pistol Build Kit Complete - ON SALE WHILE SUPPLIES LAST! The finest USA & German made parts for a complete parts kit for an MP5K, MP5K-N pistol buildEach kit includes the following HK Parts: Barrel - 5.5" button rifled, 3-lugged...HKP-02604$2,099.95 -
Out Of Stock
HKP HK 416C 9" Complete Upper Kit
HKP HK Parts
$2,799.95HK416C Complete Upper Kit - 9" After years trying to get these back in. We finally bring you a rare unicorn of a find. With our complete 416c upper kit all that would be needed to complete this kit would be a mil-spec lower or a STS 416c lower...HKP-21042$2,799.95 -
EBO HK G3 (7.62x51 / .308) Parts Kit - Tungsten Filled Carrier - (Greek HK Contract)
EBO
$499.95HK Contract Greek EBO G3 .308/7.62 X 51mm Surplus Parts Kit Rare and HK Greek EBO Surplus G3 parts kits with the Tungsten filled bolt carriers. Each de-milled parts kit comes with all parts from a functional HK G3 full auto rifle except the barrel and...HKP-17695$499.95 -
H&K G3 Parts Kit - PTR Barrel
H&K Heckler & Koch
$699.95HK German G3 .308/7.62 X 51mm Surplus Parts KitFinally, after more than 4 years of searching the globe, we have HK German Surplus G3 parts kits available to offer. Each parts kit comes complete with all parts from a functional HK G3 full auto rifle that...HKP-16577$699.95 -
HKP MP5 9mm Pistol Build Kit With Flat, Top Rail & Weldment Set
HKP HK Parts
$2,099.95MP5 9mm Pistol Build Kit Complete German & USA Made PartsON SALE WHILE SUPPLIES LAST!MP5 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a...HKP-18039$2,099.95 -
B&T APC9/APC45 Stock Conversion Kit
$149.95Stock Conversion Kit - APC9/APC45 Converts the Telescopic Brace into a Telescopic Stock. **B&T Stock Conversion Kit For BT-20522 Telescopic Brace (US Version) - For APC9/APC45HKP-19968$149.95 -
Out Of Stock
Streamlight H&K USP Conversion Kit
Streamlight
$24.95TLR-3 & TLR-4/TLR-4G H&K USP Full Size Conversion Kit ? Full Size USP. This kit adapts a standard TLR-3 or TLR-4 to fit a USP full size pistol.HKP-16923$24.95 -
H&K HK MR556 M-LOK 16.5" Forearm Upper Kit - Black
H&K Heckler & Koch
$1,779.95New HK Factory German MR556 Upper Kit with M-Lok forearm HK MR556 Upper kit includes: Complete MR556 upper receiver with M-Lok forearm MR556 Bolt group Complete Tungsten Filled HK Buffer HK Buffer Spring One 30 Round HK Steel Maritime Magazine No FFL...HKP-17366$1,779.95 -
B&T BT TP9, BT MP9 Survival Set Spare Parts Kit
B&T Brugger & Thomet
$329.95Each Survival Kit Includes One Of Each Of The Following: BT-30113 BT-30127 BT-30134 BT-30155 BT-30156 BT-30165HKP-17301$329.95 -
GSG9 HK G36K AR Rifle Kit
GSG9
$1,849.95Complete G36K AR Parts Kit with Folding Stock. Includes all parts needed for a complete build minus the receiver and magazine catch. This kit has a an AR15 1/2 X 28 threaded barrel and flash hider. This kit uses standard G36 magazines as well.*USA Made...HKP-19130$1,849.95 -
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 KitNever before offered or available anywhere or from any company. This is a one time offering only available here at HK Parts.Each HK MP5 parts kit includes the following: German demilled...HKP-19477$2,399.95 -
Streamlight HK USPC Conversion Kit
Streamlight
$23.95TLR-3 & TLR-4/TLR-4G H&K USP Compact Conversion Kit for all USP Compact models. For use with a standard TLR-3 & TLR-4HKP-16922$23.95 -
Out Of Stock
FN P90 Demilled Parts Kit
FN
$3,499.95Rare and hard to find. A factory FN P90 F/A parts kit comes as pictured with all pieces less the actual receiver included one 50 round magazine. ( Non FFL item as this is a parts kit)HKP-19639$3,499.95 -
H&K G36K Parts Kit w/ Rear Hinge Section
H&K Heckler & Koch
$3,995.00G36K Parts Kit Complete With Stock Hinge Section Finally a factory German HK G36K parts kit with the most desirable of parts and the ultra desirable stock hinge section for the proper T Bostic SL8 conversion. Tom Bostic is now offering conversions on...HKP-00269$3,995.00 -
H&K HK MP7 A2 Parts Kit - New
H&K Heckler & Koch
$20,595.00HK Mp7 A2 Parts Kit - German HK For the First Time Ever - Brand New, in the box, updated HK German MP7 A2 Parts kit. Now available as a limited one-time offering here at HKP.This MP7 kit is factory original, unfired, and demilled. Very rare and...HKP-20050$20,595.00 -
H&K HK33 Pistol Parts Kit w/ Flat & Weldment Set
H&K Heckler & Koch
$2,199.00HK 33 pistol Build Kit Complete German & US Parts- Limited Supply! Heckler & Koch German-manufactured parts kit issued to the Malaysian Army. Demilled and prepared per BATF specifications. These are the last parts kits available we are told there...HKP-19731$2,199.00 -
H&K MP5 9mm Parts Kit 100% German - A2 Stock & SEF Lower
H&K Heckler & Koch
$2,599.95HK German MP5 9mm Used Parts Kit Complete (Minus Receiver) All MP5 Kits Include: HK 3-Lug MP5 Barrel - cold hammer forged Cocking Tube Front Sight Tower Wide Forearm - Black Bolt Group - MP5 Full Auto 2 small and 1 large Push Pin 30-Round Curved...HKP-00771$2,599.95 -
HKP MP5 9mm Pistol Build Kit With Flat, Top Rail & Weldment Set - SEF Binary Trigger
$2,449.95MP5 9mm Pistol Build Kit Complete German & USA Made Parts- SEF Binary Trigger GroupON SALE WHILE SUPPLIES LAST!MP5 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made...HKP-20523$2,449.95