HK MP5/SP5 Receivers / Uppers

HK MP5/SP5 Receivers / Uppers

Upgrade your MP5/SP5 with high-quality H&K receivers and uppers. Designed for superior fit and function, these critical parts ensure your MP5/SP5 build or upgrade is reliable and accurate. Browse our selection of H&K MP5/SP5 receivers and uppers for the best performance.

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  • HKP MP5 Replacement Buffer for Folding Stock or End Cap HKP MP5 Replacement Buffer for Folding Stock or End Cap

    HKP MP5 Replacement Buffer for Folding Stock or End Cap

    HKP HK Parts

    $3.49
    HKP MP5 Replacement Buffer for Folding Stock or End Cap Spare replacement buffer for choate folding stocks or end caps. Compatible With: Choate MP5 and MP5K Stocks or End Caps (NOT compatible with MP5 .22 LR)
    HKP-18735
    $3.49
    Qty in Cart: 0
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  • HKP Rear Stock Pin Bushing Weldment

    HKP Rear Stock Pin Bushing Weldment

    HKP HK Parts

    $3.95
    HK Rear Stock Push Pin Bushing Weldment All-steel rear stock pin bushing weldment for welding in the rear of the flat. This bushing welds into the folded flat and guides the large push pin through the receiver to hold the stock to the receiver...
    HKP-17573
    $3.95
    Qty in Cart: 0
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    $3.95
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  • HKP MP5, HK94 Case Deflector Rivet

    HKP MP5, HK94 Case Deflector Rivet

    HKP HK Parts

    $1.95
    HKP MP5, HK94 Case Deflector Rivet Each case deflector will require 2 rivets to attach the case deflector to the receiver or flat. If you want the factory look and feel of doing it right these rivets are a must. These are a factory correct rivet that...
    HKP-18008
    $1.95
    Qty in Cart: 0
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  • DTAC Mag Paddle Bushing With Pin For Semi Builds DTAC Mag Paddle Bushing With Pin For Semi Builds

    DTAC Mag Paddle Bushing With Pin For Semi Builds

    DTAC Dakota Tactical

    $9.89
    DTAC Mag Paddle Bushing With Pin For Semi-Builds This part is made 100% in the US from 17-4 stainless steel. Latest production with patent pending anti-binding enhancement upgrade. Accurate tolerance for easy movement with minimal play. It has an...
    HKP-02194
    $9.89
    Qty in Cart: 0
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  • HKP MP5SD Enhanced SD Shroud

    HKP MP5SD Enhanced SD Shroud

    HKP HK Parts

    $129.95
    MP5SD weldable suppressor shroud for HK MP5 SD builds The finest SD shroud ever made or available. CNC machined & fully de-burred with the handguard attachment lugs being machined in from the outset, not welded in as found on other aftermarket style...
    HKP-15701
    $129.95
    Qty in Cart: 0
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  • H&K Cocking Tube Hanger Clip H&K Cocking Tube Hanger Clip

    H&K Cocking Tube Hanger Clip

    H&K Heckler & Koch

    $13.95
    H&K Cocking Tube Hanger Clip The HK cocking tube support hanger is the part that welds onto the end of the cocking tube that allows the forearm to install with the use of a small push pin. New HK German factory manufactured. Ready to weld onto your...
    HKP-00349
    $13.95
    Qty in Cart: 0
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  • Choate MP5 & HK94 End Cap & Sling Swivel Choate MP5 & HK94 End Cap & Sling Swivel

    Choate MP5 & HK94 End Cap & Sling Swivel

    Choate

    $36.95
    Choate MP5 & HK94 End Cap and Sling Swivel Made in the USA, MP5 and HK94 end cap features an extra thick heavy-duty rubber buffer that is replaceable with a simple screwdriver. Each HK end cap also features a sling swivel for use with all types of...
    HKP-00115
    $36.95
    Qty in Cart: 0
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  • HKP Semi Shelf Weldment - Metal Grip Housing HKP Semi Shelf Weldment - Metal Grip Housing

    HKP Semi Shelf Weldment - Metal Grip Housing

    HKP HK Parts

    $14.95
    HKP Semi Shelf Weldment Metal Grip Housing For Semi-Auto Trigger Packs This HK German specification metal trigger frame weldment is designed for converting SEF style housings from full auto to semi-auto. This weldable block or shelf is essential for...
    HKP-16657
    $14.95
    Qty in Cart: 0
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  • HKP Picatinny Rail For HK Receivers - 17 Slot HKP Picatinny Rail For HK Receivers - 17 Slot

    HKP Picatinny Rail For HK Receivers - 17 Slot

    HKP HK Parts

    $69.95
    HKP Picatinny Rail For HK Receivers - 17 Slot Mil-Spec all steel Picatinny rail in the white. Relief cut for HK receivers and made for mounting scopes and optics to HK builds. This unit easily welds to the top of your HK receiver. Compatible With: HK...
    HKP-01446
    $69.95
    Qty in Cart: 0
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  • HKP Spare Buffer For Folding Stocks & End Caps HKP Spare Buffer For Folding Stocks & End Caps

    HKP Spare Buffer For Folding Stocks & End Caps

    HKP HK Parts

    $9.95
    HKP Spare Buffer For Folding Stocks & End Caps New US manufactured flat style "H"buffer to replace the factory HK buffer on MP5K folding stocks and end caps. As well as a spare or replacement buffer for the MP5 & MP5K folding B&T stocks. Made...
    HKP-17886
    $9.95
    Qty in Cart: 0
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  • HKP MP5 Sling Clip for Magwell HKP MP5 Sling Clip for Magwell

    HKP MP5 Sling Clip for Magwell

    HKP HK Parts

    $9.95
    HKP MP5 Sling Clip for Magwell This is the factory correct sling clip that attaches to the left hand side of the magwell. Note: 3 rivets are required to attach - sold separately 
    HKP-18313
    $9.95
    Qty in Cart: 0
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  • DTAC 90 Series Semi Auto Shelf Weldment - Billeted DTAC 90 Series Semi Auto Shelf Weldment - Billeted

    DTAC 90 Series Semi Auto Shelf Weldment - Billeted

    DTAC Dakota Tactical

    $34.95
    DTAC Spec Billeted Semi Auto Shelf For C/P'ed Trigger Group -Dakota Tactical The needed receiver shelf that is welded to the magwell of the receiver to allow the use of clipped & pinned trigger housings. These are as made to DTAC's custom specs...
    HKP-18072
    $34.95
    Qty in Cart: 0
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  • LSC MP5 9mm Receiver Flat LSC MP5 9mm Receiver Flat

    LSC MP5 9mm Receiver Flat

    LSC

    $199.95
    MP5 Receiver Flat - LSC LSC 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...
    HKP-20555
    $199.95
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  • HKP MP5 Sling Clip Rivet Set - 3 Rivets

    HKP MP5 Sling Clip Rivet Set - 3 Rivets

    HKP HK Parts

    $7.89
    HKP MP5 Sling Clip Rivet Set - 3 Rivets Factory correct MP5 sling clip rivet set (includes a set of 3 rivets). This is the factory correct rivet set to attach the HK sling clip to the left hand side of the magwell. Each set includes a set of 3 rivets for...
    HKP-17003
    $7.89
    Qty in Cart: 0
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    $7.89
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  • HKP MP5 & MP5K 9mm Anti-Rattle Roller Tipped Paddle Magazine Release HKP MP5 & MP5K 9mm Anti-Rattle Roller Tipped Paddle Magazine Release

    HKP MP5 & MP5K 9mm Anti-Rattle Roller Tipped Paddle Magazine Release

    HKP HK Parts

    $29.47
    HK MP5, MP5K 9mm Anti-Rattle Roller Tipped Paddle Magazine Release Latest generation paddle mag release for all 9mm MP5, MP5K style builds. Made to the latest German specs, materials, and design.  Compatible With: MP5, 94 MP5K, SP89, SP5K Other...
    HKP-17570
    $29.47
    Qty in Cart: 0
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  • HKP Picatinny Rail For HK Receivers - 13 Slot HKP Picatinny Rail For HK Receivers - 13 Slot

    HKP Picatinny Rail For HK Receivers - 13 Slot

    HKP HK Parts

    $52.95
    HKP Picatinny Rail For HK Receivers - 13 Slot Mil-Spec all steel CNC'ed picatinny rail in the white, relief cut to fit flush and low profile on HK receivers. The most solid and consistent mounting platform made for mounting scopes and optics to HK builds...
    HKP-18238
    $52.95
    Qty in Cart: 0
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  • HKP MP5/HK94 Complete Weldment Set For Receiver Flat

    HKP MP5/HK94 Complete Weldment Set For Receiver Flat

    HKP HK Parts

    $59.95
    HKP 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
    $59.95
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  • HKP Picatinny Rail For HK Receivers - 15 Slot HKP Picatinny Rail For HK Receivers - 15 Slot

    HKP Picatinny Rail For HK Receivers - 15 Slot

    HKP HK Parts

    $59.95
    HKP Picatinny Rail For HK Receivers - 15 Slot Mil-Spec all steel CNC'ed picatinny rail in the white, relief cut to fit flush and low profile on HK receivers. The most solid and consistent mounting platform made for mounting scopes and optics to HK builds...
    HKP-18241
    $59.95
    Qty in Cart: 0
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  • H&K Magazine Catch - MP5, MP5K - Latest Style H&K Magazine Catch - MP5, MP5K - Latest Style

    H&K Magazine Catch - MP5, MP5K - Latest Style

    H&K Heckler & Koch

    $64.95
    H&K Magazine Catch - Latest Style Genuine HK mag release for factory and clone firearms.  This component often resolves issues with mags not locking into position on HK clones and builds.  Constructed from a single piece of steel unlike the...
    HKP-00911
    $64.95
    Qty in Cart: 0
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  • PTR HK MP5 Flat Receiver w/ Weldment Set PTR HK MP5 Flat Receiver w/ Weldment Set

    PTR HK MP5 Flat Receiver w/ Weldment Set

    PTR

    $294.95
    MP5 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
    $294.95
    Qty in Cart: 0
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  • Out Of Stock
    HKP HK MP5 9mm Receiver Flat with Weldment Set HKP HK MP5 9mm Receiver Flat with Weldment Set

    HKP HK MP5 9mm Receiver Flat with Weldment Set

    HKP HK Parts

    $219.95
    HKP HK MP5 9mm Receiver Flat with Weldment Set New MP5 receiver flat and weldment set combined for the best complete build option on the market. Made by the original German tool and die maker of the LSC receiver flat utilizing factory original German...
    HKP-20920
    $219.95
    Qty in Cart: 0
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  • Flat Bending Jig Set For All HK Style Flats - Billeted - All Steel Flat Bending Jig Set For All HK Style Flats - Billeted - All Steel

    Flat Bending Jig Set For All HK Style Flats - Billeted - All Steel

    $599.95
    Flat Bending Jig Set For All HK Style Flats - Billeted - All Steel NEW- LATEST 4th GENERATION 100% ALL STEEL VERSION AND DESIGN. THE FINEST JIG SET AVAILABLE!  All steel billeted universal flat bending jig for all HK receiver flats including our new...
    HKP-19595
    $599.95
    Qty in Cart: 0
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  • Cartridge Case Deflector, Shell Deflector - MP5, MP5K - Billet

    Cartridge Case Deflector, Shell Deflector - MP5, MP5K - Billet

    HKP HK Parts

    $14.95
    Cartridge Case Deflector, Shell Deflector - MP5, MP5K - Billet New US made case deflector for receiver flat or receiver for all MP5, HK94, MP5K, & SP89 builds. The case deflector is riveted or welded in place on the ejection port of the 9mm receiver...
    HKP-17574
    $14.95
    Qty in Cart: 0
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  • RCM MP5 9mm Trunnion RCM MP5 9mm Trunnion

    RCM MP5 9mm Trunnion

    RCM

    $64.95
    RCM MP5 9mm Trunnion US made to exact factory HK specifications and machined completely from ordnance grade steel and heat treated to factory specs.  Compatible With: MP5, 94 MP5K SP89 Clones or other custom builds
    HKP-01193
    $64.95
    Qty in Cart: 0
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  • HKP 90 Series Paddle Mag Release Easy Install Fixture HKP 90 Series Paddle Mag Release Easy Install Fixture

    HKP 90 Series Paddle Mag Release Easy Install Fixture

    HKP HK Parts

    $187.95
    HKP 90 Series Paddle Mag Release Easy Install Fixture The original one and only paddle mag release fixture. The perfect jig for the installation of the factory correct paddle mag release with the proper hole placement and an easy to use jig that will...
    HKP-17587
    $187.95
    Qty in Cart: 0
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    $187.95
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  • HKP SP5K 9mm Drop In Paddle Mag Release Upgrade Kit HKP SP5K 9mm Drop In Paddle Mag Release Upgrade Kit

    HKP SP5K 9mm Drop In Paddle Mag Release Upgrade Kit

    HKP HK Parts

    $74.95
    HK 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
    Qty in Cart: 0
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  • H&K MP5, HK94 Case Deflector Rivet H&K MP5, HK94 Case Deflector Rivet

    H&K MP5, HK94 Case Deflector Rivet

    H&K Heckler & Koch

    $9.95
    H&K MP5, HK94 Case Deflector Rivet Each case deflector, US or German-made, will require two rivets to attach the case deflector to the receiver or flat. If you want the factory look and feel of doing it right, these rivets are a must-have. These are...
    HKP-00147
    $9.95
    Qty in Cart: 0
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    $9.95
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  • HKP MP5, MP5K Scope Tab - Weldment

    HKP MP5, MP5K Scope Tab - Weldment

    HKP HK Parts

    $9.95
    MP5, MP5K Sight Tab - Weldment HK MP5, MP5K 17-4 Stainless H900 rear sight tab. The most correct MP5, MP5K rear sight base available. If you want your build to look as factory correct as possible then this sight base is an absolute must. Compatible...
    HKP-17503
    $9.95
    Qty in Cart: 0
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    $9.95
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  • LSC/PTR Receiver Flat- MP5 9mm LSC/PTR Receiver Flat- MP5 9mm

    LSC/PTR Receiver Flat- MP5 9mm

    LSC

    $239.95
    MP5 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
    $239.95
    Qty in Cart: 0
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  • HKP HK MP5F Flat - Alternate Holes HKP HK MP5F Flat - Alternate Holes

    HKP HK MP5F Flat - Alternate Holes

    HKP HK Parts

    $125.95
    HKP HK MP5F 9mm Flat - Alternate Holes MP5 receiver flat crafted by the original German tool and die maker of the LSC receiver flat using factory original German prints and specifications. This receiver features alternate holes for the correct MP5F or...
    HKP-21551
    $125.95
    Qty in Cart: 0
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    $125.95
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  • HKP MP5 End Cap with Sling Swivel HKP MP5 End Cap with Sling Swivel

    HKP MP5 End Cap with Sling Swivel

    HKP HK Parts

    $84.95
    HK Alloy Pistol End Cap with Sling Swivel Made from solid billet aircraft grade aluminum with the HK German sling loop and rubber heavy duty H buffer. With the alloy construction this unit will not break like the plastic end caps.  Compatible...
    HKP-18138
    $84.95
    Qty in Cart: 0
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    $84.95
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  • DTAC Picatinny Rail For HK Receivers - 15 Slot DTAC Picatinny Rail For HK Receivers - 15 Slot

    DTAC Picatinny Rail For HK Receivers - 15 Slot

    DTAC Dakota Tactical

    $74.95
    Dakota Tactical Picatinny Rail To Weld To The Receiver Mil-Spec all steel picatinny rail in the white, relief cut for HK receivers & made for mounting scopes and optics to HK builds. This unit easily welds to the top of your HK receiver. Compatible...
    HKP-17819
    $74.95
    Qty in Cart: 0
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    $74.95
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  • HKP MP5 40/10 Receiver Flat HKP MP5 40/10 Receiver Flat

    HKP MP5 40/10 Receiver Flat

    HKP HK Parts

    $399.95
    MP5 40 & MP5 10mm Receiver Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of firearms. Compatible With: MP5 .40 Cal MP5 10mm MP5 ...
    HKP-00767
    $399.95
    Qty in Cart: 0
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    $399.95
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  • HKP MP5, MP5K Rear Sight Base - Billeted

    HKP MP5, MP5K Rear Sight Base - Billeted

    HKP HK Parts

    $17.95
    Billeted MP5, MP5K Rear Sight Base - Weldment All steel HK MP5, MP5K billeted rear sight base. The most correct MP5, MP5K rear sight base available. The only billeted factory correct sight base with the factory HK German side axis grooves. If you want...
    HKP-18087
    $17.95
    Qty in Cart: 0
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    $17.95
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  • Out Of Stock
    HKP HK MP5 9mm Receiver Flat HKP HK MP5 9mm Receiver Flat

    HKP HK MP5 9mm Receiver Flat

    HKP HK Parts

    $189.95
    HKP HK MP5 9mm Receiver Flat New MP5 receiver flat made by the original German tool and die maker of the LSC receiver flat utilizing factory original German prints and specifications. The creator of our receiver flat has been regarded as the premier flat...
    HKP-20921
    $189.95
    Qty in Cart: 0
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    $189.95
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  • DTAC Picatinny Rail For HK Receivers - 13 Slot DTAC Picatinny Rail For HK Receivers - 13 Slot

    DTAC Picatinny Rail For HK Receivers - 13 Slot

    DTAC Dakota Tactical

    $74.95
    DTAC Picatinny Rail For HK Receivers - 13 Slot Mil-Spec all steel picatinny rail in the white, relief cut for HK receivers & made for mounting scopes and optics to HK builds. This unit easily welds to the top of your HK receiver. Compatible With: HK...
    HKP-17818
    $74.95
    Qty in Cart: 0
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    $74.95
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  • Choate HK MP5 QD End Cap with Buffer - Black Choate HK MP5 QD End Cap with Buffer - Black

    Choate HK MP5 QD End Cap with Buffer - Black

    HKP HK Parts

    $99.95
    Quick Detach Steel End Cap With Replaceable Rubber Buffer - HK MP5 With this MP5 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...
    HKP-20118
    $99.95
    Qty in Cart: 0
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    $99.95
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  • Out Of Stock
    H&K MP5, MP5K Case Deflector H&K MP5, MP5K Case Deflector

    H&K MP5, MP5K Case Deflector

    H&K Heckler & Koch

    $0.00
    HK German case deflector for receiver flat or receiver for all MP5, HK94, MP5K & SP89 builds. The case deflector is riveted or welded in place on the ejection port of the 9mm receiver/flat to aid in the extraction of the 9mm round. HK MP5, 94 HK...
    HKP-00871
    $0.00
    Qty in Cart: 0
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    $0.00
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  • H&K MP5 Magazine Release Set H&K MP5 Magazine Release Set

    H&K MP5 Magazine Release Set

    H&K Heckler & Koch

    $184.95
    H&K Magazine Release Set This is the complete magazine release kit that includes both the paddle mag release and standard left-to-right mag release on your HK 9mm rifle or pistol build.  Compatible With: MP5, MP5K style 9mm models Set...
    HKP-02402
    $184.95
    Qty in Cart: 0
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    $184.95
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