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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On Sale
HKP HK MP5 Picatinny Rail Stock Adapter - BLEMISHED
HKP HK Parts
Now: $92.95Was: $134.95HKP HK MP5 Picatinny Rail Stock Adapter - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Our rail stock adapter allows you to attach any 1913 Style...HKP-21426-BNow: $92.95Was: $134.95 -
HKP HK MP5, 94, 93/53/33 AR-15 Style Magpul Stock
HKP HK Parts
$197.95HKP HK 93/53/33 (5.56/.223) AR-15 Style Magpul Stock US Manufactured AR15 to HK 93,33,53 series stock assembly with Magpul MOE stock. Each unit comes complete and ready to install on your HK 93,33,53 or HK94, MP5 firearm. Made from aircraft grade...HKP-16271$197.95 -
HKP HK MP5K Receiver Flat - Smooth Top
HKP HK Parts
$129.95HKP HK MP5K Receiver Flat - Smooth Top The MP5K receiver flat has been meticulously crafted by the original German tool and die maker of the LSC receiver flat, utilizing factory original German prints and specifications. This receiver boasts a flat top,...HKP-21550$129.95 -
HKP HK MP7 Dual Magazine Clamp
HKP HK Parts
$49.95HKP HK MP7 Dual Magazine Clamp Our MP7 dual mag clamp was designed for quick mag swaps at the range or in the real world. The clamp works with any capacity MP7 magazine. Compatible With: HK MP7HKP-21597-M$49.95 -
Out Of Stock
HKP HK MR556/416 10.4" 5.56 Barrel
HKP HK Parts
$369.95MR556 & HK416 Barrel - 10.4"- US Made Finally an answer for all of those that have been wanting a 10.4" 416 or MR556 barrel option for your MR556, CR556 & HK 416's. Each barrel is as close as you can get for those that want a HK 416 style upper...HKP-18200$369.95 -
Out Of Stock
HKP HK MR556/416 9" HK416C Style Barrel Conversion Kit
HKP HK Parts
$0.00MR556 & HK416 Barrel Conversion Kit - 9" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...HKP-18401$0.00 -
Out Of Stock
HKP HK MR556/416 DMR Extended 15" M-LOK Handguard - Black
HKP HK Parts
$249.95HK MR556 & HK416 Extended DMR 15" Handguard - M-LOK A drop on replacement forearm for the HK MR556 and HK 416. A perfect upgrade for your HK rifle. This rail also provides an additional 6" of rail length for more flexibility and great control.HKP-18019$249.95 -
Out Of Stock
HKP HK MR556/416 DMR Extended 15" Quad Rail - Black
HKP HK Parts
$259.95HK MR556 & HK416 DMR Length 15" Quad Rail - ExtendedHKP-18018$259.95 -
HKP HK MR556/416 Extractor Spring Buffer
HKP HK Parts
$5.39HKP HK MR556/416 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 FirearmsHKP-21604$5.39 -
Out Of Stock
HKP HK MR556/416 Titanium Firing Pin Catch
HKP HK Parts
$49.95HK MR556 & HK416 Firing Pin - TitaniumGrade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK MR556 & HK 416 weapon system. Get the...HKP-17767$49.95 -
Out Of Stock
HKP HK MR556/416 Upper 9" 416C Style Conversion Kit
HKP HK Parts
$899.95MR556 & HK416 Upper Conversion Kit - 9" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...HKP-18674$899.95 -
Out Of Stock
HKP HK SL8 (5.56/.223) AR15 Mag Well Adapter
HKP HK Parts
$199.95AR15 & M16 Magazine Well Adapter - US Made This unit will replace the G36 mag well and allow the use of AR15 magazines in your SL8 high-capacity conversion. This is a great upgrade for those who want to use easy-to-find AR/M16 mags. Please Note: This...HKP-00800$199.95 -
Out Of Stock
HKP HK UMP (9mm) Semi Auto Bolt
HKP HK Parts
$369.95HK UMP 9mm -Semi-Auto Bolt Group The semi-auto bolt group is required for HK USC to HK UMP caliber conversions. The full-auto bolt carrier will not work in HK USC rifles. Includes: Extractor Firing pin Retaining Pin Firing pin &...HKP-18752$369.95 -
Out Of Stock
HKP HK UMP (9mm) Standard Barrel
HKP HK Parts
$299.95HK UMP 9mm Barrel US made replica of the HK UMP 9mm barrel. Counts as one US made compliant part as an added bonus.HKP-18640$299.95 -
Out Of Stock
HKP HK UMP .45 ACP Barrel - Threaded 16x1 RH - 3-Lug
HKP HK Parts
$399.95HKP H&K UMP .45 ACP Barrel - Threaded 16x1 RH - 3-Lug New USA made .45 ACP 8" barrel for the UMP or Omega firearms. Each barrel is threaded 16x1 RH and 3-Lug tipped. The finest barrel for the UMP .45 ACP on the market. Specifications: Overall Length...HKP-18511$399.95 -
HKP HK UMP 5 Prong Flash Hider - 5/8x24
HKP HK Parts
$67.95HKP HK UMP 5 Prong Flash Hider - 5/8x24 Compatible With: HK UMPHKP-21523$67.95 -
Out Of Stock
HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28
HKP HK Parts
$679.95HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop in with...HKP-02287$679.95 -
Out Of Stock
HKP HK USC (.45 ACP) Carbine Mag Release - Extended
HKP HK Parts
$24.95HK USC Alloy Mag Release - Extended Billeted alloy USC magazine release. This is a very common repair & replacement part as they are fairly easy to break on the USC lower. With this new metal mag release you get more surface area as well as a much...HKP-17918$24.95 -
Out Of Stock
HKP HK21 Drum Hanger
HKP HK Parts
$289.95Click the NOTIFY ME WHEN AVAILABLE to get on the notification list for when these hangers are available to ship (estimated availability by Thanksgiving) HKP HK21 Drum Hanger Our HK21 drum hanger is precisley machined from 4140 billet steel, heat-treated...HKP-21453$289.95 -
HKP HK33 11" LH Cocking Tube
HKP HK Parts
$99.95HKP HK33 11" Left Hand Cocking Tube This is the one and only left handed cocking tube for the HK33 cocking tube made in the US. Made to the exact HK specifications as the factory HK33 German cocking tube. Overall length is 11".HKP-18892$99.95 -
HKP HK33 Dual Magazine Clamp
HKP HK Parts
$49.95HKP HK33 Dual Magazine Clamp Securely hold two HK33 magazines together for fast mag swaps. Precision-machined from billet aluminum and cerakoted in the popular red or classic black. Our dual mag clamp is a must for those quick mag changes. Compatible...HKP-21608-M$49.95 -
On Sale
HKP HK33 Dual Magazine Clamp - Red - BLEMISHED
HKP HK Parts
Now: $32.95Was: $49.95HKP HK33 Dual Magazine Clamp - Red - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Securely hold two HK33 magazines together for fast mag swaps...HKP-21608-RE-BNow: $32.95Was: $49.95 -
Out Of Stock
HKP Magazine Catch - Latest Style
HKP HK Parts
$19.95HKP Magazine Catch - Latest Style New, latest generation 1-piece 9mm mag catch. If you have issues with mags locking in place on clones or non-HK German firearms, it may be that you need this upgrade. One-piece constructiong versus the older generation...HKP-17571$19.95 -
Out Of Stock
HKP MP5 .22 LR PDW 5 Position Telescoping Stock
HKP HK Parts
$349.95HK MP5 .22 LR PDW Telescoping - 5 Position Adjustable Stock Finally the most anticipated PDW style stock for the MP5 .22 LR ever developed. Made in the USA. The 5 position stock rails collapse along the top ridge of the grip frame for the lowest profile...HKP-18167$349.95 -
Out Of Stock
HKP MP5 40/10 4 Position (0,1,2,F) Ambi Burst Trigger Group
H&K Heckler & Koch
$0.00HKP MP5 40/10 4 Position (0,1,2,F) Ambi Burst Trigger Group MP5 40/10 4 Position (0,1,2,F) Ambidextrous burst trigger groupHKP-00677$0.00 -
Out Of Stock
HKP MP5 40/10 Trigger Group 4 Position Navy Housing (0,1) - Safe/Semi Only - Clipped & Pinned
HKP HK Parts
$479.95HKP/H&K MP5 40/10 Safe & Semi Only Navy Style Trigger Group - Clipped & Pinned Introducing a cost-effective alternative to the high-priced and hard-to-find all-German HK FBI or 0,1 ambidextrous trigger group, now available in a 4-position...HKP-18399$479.95 -
On Sale
HKP MP5 AR Stock, Brace Adapter - QD - BLEMISHED
HKP HK Parts
Now: $108.95Was: $159.95HKP MP5 AR Stock, Brace Adapter - QD - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each AR stock, brace adapter is made from a solid billet of CNC...HKP-18788-BNow: $108.95Was: $159.95 -
Out Of Stock
HKP MP5, SP5 - PDW 5 Position Telescoping Stock
HKP HK Parts
$349.95HKP MP5, SP5 - PDW 5 Position Telescoping Stock Finally the most anticipated PDW style stock for the MP5 ever developed. Made in the USA. The stock rails collapse along the top ridge of the grip frame for the lowest profile stock ever produced for...hkp-17958$349.95 -
HKP MP5K .40 S&W Pistol Build Kit
$2,289.95HKP MP5K .40 S&W Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to accept a wide variety of muzzle devices and...HKP-21534$2,289.95 -
HKP MP5K 10mm Pistol Build Kit
HKP HK Parts
$2,289.95HKP MP5K 10mm Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to accept a wide variety of muzzle devices and suppressors...HKP-21533$2,289.95 -
Out Of Stock
HKP MP5K 9mm 5 Position Telscoping Stock - PDWC - Extended Buttpad
HKP HK Parts
$369.95HK MP5K PDW Telescoping - 5 Position Adjustable Stock - Extended Buttpad Finally the most anticipated PDW style stock for the MP5K ever developed. Made in the USA. The stock rails collapse along the top ridge of the grip frame for the lowest profile...HKP-19003$369.95 -
Out Of Stock
HKP MP5K/SP89 9mm Trigger Group 3 Position Navy Housing 0,1- Safe, Semi Only
HKP HK Parts
$0.00HKP/H&K MP5K/SP89 9mm Safe & Semi Only Navy Style Trigger Group - Clipped & Pinned Finally, a lower-cost alternative to the expensive and hard-to-find all-German HK FBI or 0,1 ambidextrous trigger group, now available in a 3-position Navy...HKP-17240$0.00 -
Out Of Stock
HKP MP5K/SP89 9mm Trigger Group 4 Position Housing 0,1- Safe, Semi Only
HKP HK Parts
$0.00MP5K, SP89 Trigger Group 4 Position Housing 0,1- Safe, Semi Only Finally, a lower cost alternative to the spendy & hard to find all German HK FBI or 0,1 ambidextrous trigger group in a 4 position factory German HK housing. Now for the first time, we...HKP-17239$0.00 -
On Sale
HKP MP5K/SP89/SP5K 9mm AR Stock Adapter - BLEMISHED
HKP HK Parts
Now: $64.95Was: $114.95HKP MP5K/SP89/SP5K 9mm AR Stock Adapter - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each AR stock, brace adapter is made from a solid billet of...HKP-17138-BNow: $64.95Was: $114.95 -
Out Of Stock
HKP MP5K/SP89/SP5K Shoulder Harness - Left Handed
HKP HK Parts
$179.95HK MP5K, SP89, SP5K Shoulder Harness - Left Handed New MP5K, SP5K or SP89 shoulder rig left handed for MP5K, SP5K & SP89 style weapon systems. Also fits clones & other HK MP5 style weapon systems with 2 spare magazine pouches that are integrated...HKP-01994$179.95 -
Out Of Stock
HKP MP5K/SP89/SP5K Shoulder Harness - Right Handed
HKP HK Parts
$179.95MP5K, SP5K, SP89 Shoulder Harness - Right Handed New MP5K, SP5K or SP89 shoulder rig right handed for MP5K, SP5K & SP89 style weapon systems. Also fits clones & other HK MP5 style weapon systems with 2 spare magazine pouches that are integrated...HKP-18021$179.95 -
Out Of Stock
HKP PTR PDW (7.62x51/.308) Complete Bolt Group
HKP HK Parts
$359.95US Made PTR Bolt Group Complete Semi-Auto 308. Factory correct bolt head and locking piece for use in the PTR PDW chambered in 7.62X51 or 308. Brand new May 2015 manufacture. This is the correct bolt for all PTR PDW with 8" barrels.HKP-17389$359.95 -
Out Of Stock
HKP PTR-32 (7.62x39) Complete Bolt Group
HKP HK Parts
$359.95US Made PTR 32 Bolt Group Complete Semi-Auto. Factory correct bolt head and locking piece for use in the PTR 32 chambered in 7.62X39. Brand new May 2015 manufacture. This is the correct bolt for all PTR 32 rifles with 12"and 16" barrels.HKP-17388$359.95 -
On Sale
HKP SEF Enhanced Ambi Selector Set - Navy Style - BLEMISHED
HKP HK Parts
Now: $53.95Was: $76.95Ambidextrous Selector Lever Set For SEF Navy Style Polymer Grip Frames - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Features: Made in the...HKP-18065-BNow: $53.95Was: $76.95 -
HKP Short KeyMod Quad Rail - Black
HKP HK Parts
$199.95MR556/416 KeyMod Qaud Rail - ShortHKP-17985$199.95