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 HK G36K Factory Blank Firing Adapter
H&K Heckler & Koch
$139.95H&K HK G36K Factory Blank Firing Adapter G36K Factory HK blank firing adapter. This adapter is date coded and comes complete with the spring clip installed. Compatible With: G36K exclusivelyHKP-16974$139.95 -
H&K HK G36K Incomplete Piston Rod - Black
H&K Heckler & Koch
$61.95H&K HK G36K Incomplete Piston Rod - BlackHKP-16345$61.95 -
Out Of Stock
H&K HK G36K Parts Kit for HDPS Stock Block Conversion
H&K Heckler & Koch
$0.00G36K Parts Kit Complete Less Stock Hinge Section Factory German HK G36K parts kit with the most desirable of the necessary parts for an HDPS stock block conversion. Contact Black Ops Defense for your stock block conversion. Includes: 3...HKP-16514$0.00 -
Out Of Stock
H&K HK G36K Slimline Handguard - Black
H&K Heckler & Koch
$0.00G36K Slim line handguard with Hkey mounting slotsHK German G36K forearm with HKey mounting slots. Made in Germany.HKP-18483$0.00 -
Out Of Stock
H&K HK MP5 4 Position Burst Trigger Group 0,1,3,F - Used
H&K Heckler & Koch
$0.00H&K HK MP5 4 Position Burst Trigger Group 0,1,3,F - Used USED pull off's from HK German MP5's. This is a complete trigger group that is a used 4 Position Burst (0,1,3,F) trigger group complete. This is a factory HK push pin Trigger group just as it...HKP-19483$0.00 -
H&K HK MP5 40 & MP5 10mm Factory F/A Bolt Carrier
H&K Heckler & Koch
$449.95New HK German MP5 40/10 Factory F/A Bolt Carrier This is the latest and greatest version of the MP5 40 and MP5 10mm carrier. No longer in production or manufactured. Tungsten filled German HK and the real deal.HKP-19390$449.95 -
H&K HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger Group
H&K Heckler & Koch
$769.95HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger GroupHKP-01752$769.95 -
H&K HK MP5 9mm Single Shot Reverse Stretch Build Kit
H&K Heckler & Koch
$1,649.95California Spec Single Shot Reverse Stretch Kit - German & USA Made Parts: This kit was built with the CA market in mind. This kit has a specially designed locking piece that once installs it renders the kit a single shot style roller lock. This kit...HKP-19698$1,649.95 -
Out Of Stock
H&K HK MP5 A3 Refinished Stock - Surplus
H&K Heckler & Koch
$0.00Used German Manufactured A3 Retractable Stock - Refinished Each German HK stock is used and had been refinished (early 80's manufacture) A one time offering of some well used German stocks that have been professionally dissassembled, cleaned, repainted...HKP-16841$0.00 -
H&K HK MP5 Parts Kit A3 4-Position Ambidextrous Lower
H&K Heckler & Koch
$5,499.95HK German MP5 9mm Used Parts Kit Complete (Minus Receiver Of Course) 100% GERMAN PARTS All MP5 Kits: HK 3-Lug MP5 Barrel - cold hammer forged Cocking Tube Front Sight Tower Wide Forearm - Black Bolt Group - MP5 Full Auto Push Pins - 1...HKP-01301$5,499.95 -
Out Of Stock
H&K HK MP5, 94, 53 Factory Slimline Forearm - Used
H&K Heckler & Koch
$0.00Used In fair/Good Shape Heckler & Koch Genuine HK94/MP5 slimline forearm. Well used but this is a perfect project forearm. This is a rare and hard to find part that fits on all MP5,94 & MP5 40/10 variants. HK no longer makes these but we have a...HKP-01720$0.00 -
Out Of Stock
H&K HK MP5, HK94 100 Degree Locking Piece-Used
H&K Heckler & Koch
$0.00H&K HK MP5, HK94 100 Degree Locking Piece-Used MP5 100 degree used surplus locking piece. Pulled from early HK German MP5 parts kits.HKP-00668$0.00 -
Out Of Stock
H&K HK MP5K Gun Briefcase
H&K Heckler & Koch
$0.00H&K HK MP5K Gun Briefcase Compatible With: MP5K Can be adapted for use with custom builds and other MP5K variants Specifications: Dimensions: 20 in/15 in/ 5 in Condition: New Origin: GermanyHKP-19207$0.00 -
Out Of Stock
H&K HK MP7 Extended Charging Handle - Black
H&K Heckler & Koch
$0.00HK MP7 Extended Charging Handle HK German Factory New Extended Charging Handle Compatible With: MP7 MP7A1 MP7A2HKP-18784$0.00 -
On Sale
H&K HK MP7A1 Left Thigh Rig Holster - Gray - BLEMISHED
H&K Heckler & Koch
Now: $167.95Was: $299.95H&K HK MP7A1 Left Thigh Rig Holster - Gray - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. New HK MP7A1 German made thigh Rig Holster. This...HKP-16733-GY-BNow: $167.95Was: $299.95 -
On Sale
H&K HK MR556, HK 416 A5 Enhanced Incomplete Trigger Guard - BLEMISHED
H&K Heckler & Koch
Now: $29.95Was: $39.95H&K HK MR556, HK 416 A5 Enhanced Incomplete Trigger Guard - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Never offered before! Now you can...HKP-19377-BNow: $29.95Was: $39.95 -
H&K HK MR556/416 9" Modular Rail System - Black
H&K Heckler & Koch
$399.95HK MR556, CR556 Modular Rail System 9"- Black HK German MR556 & CR556 handgaurd that accepts the HKey style modular rail sections. This is also the forearm that clear the OSS suppressor system. Compatible With: MR 556 HK 416 CR 556 *Weight: 13.4...HKP-17341$399.95 -
Out Of Stock
H&K HK MR556/416 Handguard Picatinny Profile - Black
H&K Heckler & Koch
$0.00Handguard with Picatinny profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock.Fits all: HK 416 A5 - 14.5" HK 416 A5 - 16.5" HK 416 A5 - 20"HKP-18493$0.00 -
H&K HK MR556/416 Mag Locking Plate
H&K Heckler & Koch
$9.95HK German HK MR556 & HK 416 Magazine Locking PlateHKP-13484$9.95 -
Out Of Stock
H&K HK MR556/416 Titanium Barrel Nut
HKP HK Parts
$99.95Titanium HK MR556, HK 416 Barrel Nut Or Socket For Barrel A must have repair and replacement part for removal or when you have any work done to your barrel as the barrel nut may become damaged in the removal and installation processes. Made in the USA...HKP-17275$99.95 -
Out Of Stock
H&K HK MR556/MR223 A5 Incomplete Upper Receiver - Black
H&K Heckler & Koch
$0.00HK German Un-Assembled/Stripped HK MR556/MR223 A5 Upper Receiver Factory HK MR556 A5 upper receiver. This is the semi-auto MR556 variant. Compatible With: HK MR556 HK MR223 HK 416*** Need a matching lower for your build? STS416 A5 LOWER -...HKP-18785$0.00 -
H&K HK MR556/MR762 Buttstock Release Lever
H&K Heckler & Koch
$9.95HK MR556 & MR762 Buttstock Release LeverHKP-16621$9.95 -
H&K HK MR556/MR762 Fixed Tactical Sling Adapter
H&K Heckler & Koch
$129.95HK MR556 & MR762 Factory Sling Adapter - Fixed Factory HK German design & the finest design available & made to last. New HK manufactured part to allow the factory HK416, MR762 slings to fit & work on the MR556, MR762 as this adds...HKP-17553$129.95 -
Out Of Stock
H&K HK MR556/MR762/416 Buffer Staking Tool
H&K Heckler & Koch
$0.00HK 416, MR556 & MR762, HK 417 - Buffer Staking Tool - German HK Rare HK factory HK staking tool for the castle nut to be staked. These took over 3 years to get and offered for cost while supplies last! Each tool is the factory correct tool used for...HKP-16945$0.00 -
H&K HK MR762 Hammer Complete - Black
H&K Heckler & Koch
$179.95H&K HK MR762 Hammer Complete - Black HK MR762 hammer, hammer spring, & bushing as a complete hammer assembly.HKP-16614$179.95 -
On Sale
H&K HK MR762, HK 417 Free Floating DMR Rail System - Black - BLEMISHED
H&K Heckler & Koch
Now: $664.95Was: $949.95H&K HK MR762, HK 417 Free Floating DMR Rail System - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL New Heckler & Koch MR762, HK 417...HKP-17706-BNow: $664.95Was: $949.95 -
H&K HK MR762/417 Charging Handle Catch
H&K Heckler & Koch
$65.95HK MR762, HK417 Extended Charging Handle Catch Complete New HK German manufacture. A great part to have on hand as these are prone to breakage and wear. Compatible With: MR762 HK 417 HK G28HKP-16852$65.95 -
H&K HK MR762/417 Charging Handle Latch Spring
H&K Heckler & Koch
$9.95New HK417, MR762 Pressure Spring This is the Charging Handle Release Latch Spring.HKP-16600$9.95 -
Out Of Stock
H&K HK MR762/417 Extended Picatinny Handguard w/ Flip Up Front - Black
H&K Heckler & Koch
$0.00HK MR762, HK 417 Extended Quad Rail With Flip Up Front SightEach unit comes with both of the mounting screws, a flip up front sight assembly for emergency use as a backup sight. HK's extended 13" rail allows for longer sight radius and more rail space...HKP-17331$0.00 -
Out Of Stock
H&K HK MR762/417 Slim Line Stock - Black
H&K Heckler & Koch
$0.00HK MR762, HK 417 Slim Line Retractable StockNew From HK Germany the slim line retractable stock fits all MR762, HK 417 buffer tubes. Marked with the HK logo and issued on specialized HK 417, MR762 rifles.Fits all: HK MR762 HK 417 HK G28 Other AR .308...HKP-17135$0.00 -
Out Of Stock
H&K HK MR762/417/G28 Bolt Head Complete
H&K Heckler & Koch
$0.00HK German 417 & MR762 Bolt Head Complete - .308/7.62 New HK German manufacture Compatible With: HK MR762 HK MR308 HK G28HKP-18143$0.00 -
Out Of StockOn Sale
H&K HK MR762/417/G28 E1 Extended Ambidextrous Charging Handle - BLEMISHED
H&K Heckler & Koch
Now: $134.95Was: $209.95H&K HK MR762/417/G28 E1 Extended Ambidextrous Charging Handle - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German MR762/HK417 extended...HKP-16599-BNow: $134.95Was: $209.95 -
$279.95 -
H&K HK SL8 Adjustable Buttstock Piece - Gray
H&K Heckler & Koch
$29.95HK SL8 Adjustable Buttstock Piece Gray in ColorHKP-16995$29.95 -
H&K HK SL8 Trigger - Used
H&K Heckler & Koch
$19.95HK SL8 Trigger - Used Compatible With: HK G36 HK SL8 HK UMP HK USCHKP-01896$19.95 -
H&K HK SL8 Windage Adjustment Spring
H&K Heckler & Koch
$4.95HK SL8 Windage Adjustment Compression SpringHKP-16400$4.95 -
Out Of Stock
H&K HK SL8-1 Complete Locking Lever
H&K Heckler & Koch
$0.00H&K HK SL8-1 Complete Locking LeverHKP-16375$0.00 -
Out Of Stock
$0.00 -
$89.99 -
H&K HK UMP .45 Conversion Kit
$1,099.95H&K HK UMP .45 Conversion Kit This kit optimizes the UMP platform by allowing the user swap between calibers in approximately 5 minutes. The Michael's machine semi-auto bolt pairs perfectly with the TPM and Gideon Shadow receivers as well as USC to...HKP-20623$1,099.95