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 PSG1/MSG90 (7.62x51/.308) Ejector Lever
H&K Heckler & Koch
$79.95HK Factory German MSG-90 / PSG1 Ejector lever New HK GermanHKP-00537$79.95 -
H&K UMP (.40 S&W) Parts Kit - German - Used
H&K Heckler & Koch
$2,287.95HK German UMP .40 Cal Parts Kit - Used HK UMP .40 German parts kit complete with all the factory HK parts minus the receiver. Perfect for those who are doing a custom build or for spare parts. Click this link to complete your build with a DEFGUNZ...HKP-00588$2,287.95 -
H&K UMP (.45 ACP) Parts Kit - Extended Demilled Rear Receiver Section - Used
H&K Heckler & Koch
$4,287.95HK German UMP .45 Parts Kit- Used PD Trade-In UMP .45 German parts kit complete with all the factory HK parts minus the receiver. PD trade-ins are in good shape. Click this link to complete your build with a DEFGUNZ DEF9 receiver. Each UMP .45 Parts...HKP-00589$4,287.95 -
H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Hand Stop Filler Piece
H&K Heckler & Koch
$59.95H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Hand Stop Filler Piece HK German Hand Stop filler piece for UMP and G36.HKP-17779$59.95 -
H&L HK G36, HK SL8 Roll Pin for Gas Piston - Black
H&K Heckler & Koch
$9.95H&L HK G36, HK SL8 Roll Pin for Gas Piston - BlackHKP-16386$9.95 -
HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block C
HDPS
$159.95HDPS HK UMP & USC Stock Block C Each unit comes with a new push-pin design. This is the part to use with the ACE hinge part number FSM-TB (push button folding stock) and non-folding push bottom (pig nose). This is just...HKP-02613$159.95 -
HDPS HK USC, UMP Stock Block C Eyelet / Thumb Screw
HDPS
$169.95HDPS HK USC, UMP Stock Block C Eyelet / Thumb Screw Great option since factory HK UMP stocks are hard to find and expensive. The HDPS HK USC/UMP stock block "C." Each unit comes with eyelet / thumb screw design. This is the type for use with the ACE...HKP-20688$169.95 -
$39.95 -
Out Of Stock
$4.95 -
$19.95 -
HK SL8 Magwell - Used - Gray
USA
$9.95HK SL8 Magwell - Used - Gray Used Magwell - Gray - SL8HKP-20056$9.95 -
HK Universal Polymer 3.25" Rail
H&K Heckler & Koch
$59.95HK Universal Polymer Rail With Screws for the G36E, SL8, USC, UMP HK German manufacture. New universal picatinny rail for forward section or forearm. Compatible With: G36E SL8 USC UMP All variants Specifications: Length: 3.25"hkp-18489$59.95 -
Out Of StockOn Sale
HK USC (.45 ACP) USC to UMP Conversion ACR Stock Block - BLEMISHED
Now: $88.95Was: $149.95HK USC (.45 ACP) USC to UMP Conversion ACR Stock Block - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. A new product that allows you to add the widely...HKP-17357-BNow: $88.95Was: $149.95 -
HKP HK 21 (7.62x51/.308) Feed Mechanism Latch Lever
Michaels Machines
$69.95HK21 Feed Mechanism Latch LeverHKP-00235$69.95 -
HKP HK 416, MR556 Upper Receiver Forging
HKP HK Parts
$88.95HKP HK 416 A1/A3, MR556 Upper Receiver Forging HK Parts' very own 416 upper receiver forging. This is the first time that these forgings have been made available to the public. Our receivers come with the ever popular Cerro Forge "keyhole" marking. Cerro...HKP-21008$88.95 -
On Sale
HKP HK 93/53/33 (5.56/.223) AR-15 Style Stock Adapter
HKP HK Parts
Now: $174.95Was: $199.95PTR Manufactured AR15 to HK 93,33,53 series stock adopter assembly. Each adopter unit will allow the use of AR15 stocks on your HK 93,33,53, C93/C53 or HK94, MP5 firearm. Each assembly includes the following: Factory Correct HK 93, 33, 53, back...HKP-16255Now: $174.95Was: $199.95 -
HKP HK 93/53/33 (5.56/.223) Trigger Pack - 4 U.S. 922r Parts
HKP HK Parts
$299.95Semi Auto Trigger Pack HK93,33 & Z43 Models - 4 US 922R Parts HK 93,33,53 & Zenith Z-43 Semi Auto Trigger Pack Complete. Each trigger group incorporates the following US made compliant parts completely assembled & ready to drop in. The...HKP-18003$299.95 -
HKP HK MP5 Receiver Flat - Smooth Top
HKP HK Parts
$125.95HKP HK MP5 Receiver Flat - Smooth Top The MP5 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-21552$125.95 -
HKP HK MP5 Single Stage Semi Auto Trigger Pack - Ambi
HKP HK Parts
$579.95HKP/H&K MP5 9mm Single Stage Semi-Auto Ambidextrous Trigger Pack This trigger pack starts as a factory F/A trigger pack before being converted into a semi-auto trigger pack and receiving single-stage trigger work. This is the best option for...HKP-21483$579.95 -
On Sale
HKP HK MP7 Dual Magazine Clamp - Red - BLEMISHED
HKP HK Parts
Now: $29.95Was: $49.95HKP HK MP7 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. Our MP7 dual mag clamp was designed for quick mag swaps at the...HKP-21597-RE-BNow: $29.95Was: $49.95 -
HKP HK MR556/416 DMR KeyMod 9" Handguard - Black
HKP HK Parts
$199.95HK MR556 & HK416 Standard Length 9& - KeyMod ForearmHKP-17982$199.95 -
HKP HK MR556/416 DMR KeyMod Extended 15" Handguard - Black
HKP HK Parts
$249.95HKP HK MR556/416 DMR KeyMod Extended 15" Handguard - BlackHKP-18020$249.95 -
HKP HK UMP 4 Prong Ported Flash Hider
HKP HK Parts
$49.95HKP HK UMP 4 Prong Ported Flash Hider 4-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-21578$49.95 -
HKP HK UMP Flash Hider - Birdcage Style
HKP HK Parts
$49.95HKP HK UMP Flash Hider - Birdcage Style We are pleased to present the HKP UMP birdcage flash hider, designed specifically for our UMP 45 parts kit. This exceptional accessory not only protects exposed threads but also enhances the overall aesthetic of...HKP-21579$49.95 -
HKP HK UMP, HK USC, HK G36 Hand Stop Complete - Black
HKP HK Parts
$49.95Hand Stop Complete - USA - UMP, USC & G36 Compatible With: USC UMP G36K G36CHKP-19236$49.95 -
HKP HK USC Stock Block to Picatinny Rail
HKP HK Parts
$129.95HKP HK USC Stock Block to Picatinny Rail The HKP USC stock block with picatinny rail offers superior adjustability for the stock of your choice. Each stock block is crafted from billet aluminum, cerakoted for a robust finish, and includes the sling pin...HKP-21594-M$129.95 -
HKP MP5 Parts Kit
HK Parts, Heckler & Koch
$2,749.95HKP MP5 Parts Kit Vintage flavor with modern flare. Our team set out to strike a symbiotic balance of classic MP5 with modern accessories delivered at an affordable price. The result is a build kit comprised of vetted components engineered to get...HKP-21495$2,749.95 -
HKP QD End Cap with Buffer - SP5
HKP HK Parts
$99.95HK SP5 - Quick Detach End Cap With this SP5 QD end cap upgrade you will get a heavier buffer to internally protect your firearm and keep your bolt carrier in tip top condition for years to come. Machined aircraft grade aluminum and Cerakoted for the best...HKP-20757$99.95 -
JMAC Customs TS-8 w/ 1913 Folding Mech
JMAC Customs
$284.99JMAC Customs TS-8 w/ 1913 Folding Mech Triangle stock 8" with our 1913 folding mech (not assembled) 2x integrated QD sling socket 8" length Drilled and tapped for optional cheek risers (will be available in the future) Compatible with SIG folding...HKP-20145$284.99 -
On Sale
JMAC G36K/HK33 Compensator (KeyMicro) - Threaded 15x1
JMAC Customs
Now: $86.95Was: $109.95JMAC G36K/HK33 (5.56/.223) Compensator (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 alignment with bore rods...HKP-21257Now: $86.95Was: $109.95 -
On Sale
Lee Sporting HK MP5K Complete Trigger Group
Lee Sporting
Now: $499.95Was: $549.95Lee Sporting Complete Trigger Group - MP5K Ergonomic upgrade to OEM grip. 4.3oz lighter than OEM trigger group. Housing made from MJF PA11 Nylon. Bespoke ejector lever CNC cut from 4140. Compatible With: HK PTR Dakota Tactical Other clones that use...HKP-20466Now: $499.95Was: $549.95 -
Magpul HK MP5K AR 9mm Navy Style Match Trigger Group
Magpul
$649.95Magpul HK MP5K AR 9mm Navy Style Match Trigger Group Our improved HK-AR Navy ambidextrous lower housing is now paired with our match trigger pack and a Magpul MOE grip to make this complete MP5K-AR style match trigger group. This trigger group is a...HKP-21378$649.95 -
Magpul HK SP5 Adapter Brace with Stock
Magpul
$189.95Magpul HK SP5 Adapter Brace with Stock SP5 DT Magpul stock ready to drop in on any in-spec SP5 receiver or clone. We take our AR SP5 Adapter and attach it onto a mil-spec buffer tube. We then drop it on to the new Magpul DT Carbine stock. This is a great...HKP-21411-M$189.95 -
Magpul M-Lok Tape Switch - Surefire ST
Magpul
$14.95Magpul M-Lok Tape Switch - Surefire ST The M-LOK tape switch mounting plate is designed to attach surefire ST pressure pads on M-LOK compatible systems. It is molded of the same high quality polymer as other Magpul products, combining light weight with...HKP-21480$14.95 -
Magpul Moe K2 AR Grip
Magpul
$22.95Magpul Moe K2 AR Grip Similar in concept to the MOE-K, the MOE-K2 is a drop in upgrade for AR15/M4's that offers a more vertical grip angle, but in a full-size grip design. The steeper vertical grip angle is optimized for use on PDW (Personal Defense...HKP-19567$22.95 -
MI Side Folder with Lightweight Stock
MI Midwest Industries
$180.95MI Side Folder with Light Weight Stock Features: Made in the USA Heavy-duty side-folding mechanism constructed from 4140 steel Full-length locking lug for maximum strength Solid positive lock up in both positions Steel clamp with large surface...HKP-20065$180.95 -
Nefarious Arms HK 416 Installation Barrel
Nefarious Arms
$154.95Nefarious Arms HK 416 Installation Barrel HK416 multitool patterned off a genuine HK 416 wrench with added upgrades Used with a traditional 1/2″ torque wrench or the plug-and-socket style torque wrench that utilizes the ball detent...HKP-21487$154.95 -
Nefarious Arms HK 416/MR556 14.5" A3 Barrel
Nefarious Arms
$694.95Nefarious Arms HK 416/MR556 14.5" 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. Compatible With: HK 416 (A1,...HKP-21589$694.95 -
PTR AR Stock Adapter w/Magpul Stock - G3, 91, 93, 53, 33
PTR
$209.95PTR AR Stock Adapter With Magpul Stock AR15/M16 to HK 90 series stock adapter set with a Magpul MOE stock installed as well as the buffer tube and castle nut. Just use your existing back-plate and buffer assembly and you are ready to go! This is a...HKP-15457$209.95 -
RCM HK33/93 .300 BLK 16.1 Inch Barrel - Threaded 5/8x24
RCM
$234.95NCM HK33/93 .300 BLK 16.125 Inch Barrel - Threaded 5/8x24 Each barrel was designed for use with the wildly popular AAC style quick detach muzzle breaks and cans in the 5/8x24 thread pitch. Although, this barrel is perfect for just about any .300 BLK...HKP-17392$234.95