MP5K / SP5K Receivers / Uppers
Build a solid foundation for your firearm with MP5K receivers and SP5K uppers from HKP. Our HK Parts include precision-machined upper receivers to ensure accuracy and reliability. Complete your build with the best MP5K and SP5K receivers available.
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Out Of StockOn Sale
HK Stock Pin Bushing Weldment
HKP HK Parts
Now: $3.16Was: $3.95HK Stock Push Pin Bushing Weldment All-steel 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. Compatible...Now: $3.16Was: $3.95 -
On Sale
HK90 Series Mag Paddle Bushing with Pin for Semi Builds
DTAC Dakota Tactical
Now: $8.90Was: $9.89DTAC 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...Now: $8.90Was: $9.89 -
On Sale
HK MP5, MP5K, HK33, HK53, HK93, HK91, G3 Hanger Clip - Cocking Tube
H&K Heckler & Koch
Now: $12.55Was: $13.95H&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...Now: $12.55Was: $13.95 -
On Sale
HK Semi Shelf Weldment - Metal Grip Housing
HKP HK Parts
Now: $11.96Was: $14.95HKP 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...Now: $11.96Was: $14.95 -
On Sale
HK Picatinny Rail For HK Receivers - 17 Slot
HKP HK Parts
Now: $55.96Was: $69.95HKP 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...Now: $55.96Was: $69.95 -
Out Of StockOn Sale
HK MP5, MP5K & 94 Magazine Release Set - German/USA
HKP HK Parts
Now: $75.96Was: $94.95HK MP5, MP5K, & 94 Mag Release Set, Complete - German & USA Complete magazine paddle mag release kit that includes everything you need for the the paddle mag release & standard mag release on your HK 9mm rifle or pistol build. All parts are...Now: $75.96Was: $94.95 -
On Sale
HK Spare Buffer For Folding Stocks & End Caps
HKP HK Parts
Now: $7.96Was: $9.95HKP 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...Now: $7.96Was: $9.95 -
On Sale
HK MP5 Sling Clip for Magwell
HKP HK Parts
Now: $7.96Was: $9.95HKP 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 separatelyNow: $7.96Was: $9.95 -
On Sale
HK Receiver Flat Bending Jig Set - Billet Aluminum
HKP HK Parts
Now: $314.97Was: $449.95Flat Bending Jig Set For All HK Style Flats - Billeted - Aluminum Aluminum billeted universal flat bending jig for all HK receiver flats including PTR .308 flats and the PTR/LSC flats. Each bending jig comes complete with all the pieces you need for...Now: $314.97Was: $449.95 -
On Sale
HK Picatinny Rail For HK Receivers - 15 Slot
HKP HK Parts
Now: $47.96Was: $59.95HKP 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...Now: $47.96Was: $59.95 -
On Sale
Picatinny Rail for HK Receivers - 13 Slot
HKP HK Parts
Now: $42.36Was: $52.95HKP 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...Now: $42.36Was: $52.95 -
On Sale
MP5, G3, HK53 Semi Auto Shelf Weldment - Billeted
DTAC Dakota Tactical
Now: $31.46Was: $34.95DTAC 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...Now: $31.46Was: $34.95