Stocks / Braces / Slings
Explore our premium selection of HK-specific stocks, braces, and slings at HKParts, designed to enhance comfort and functionality for a variety of HK models. Our offerings include adjustable braces, tactical slings, and folding stocks, perfect for upgrading your HK MP5, HK416, or UMP. Whether for tactical use or recreational shooting, our durable and versatile accessories provide superior firearm support and stability.
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HK MP5K .40/10mm Folding Stock with Adapter
HKP HK Parts
$239.95HKP HK MP5K .40/10mm Folding Stock with Adapter Genuine H&K UMP folding stock completely assembled with the HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling attachment point. Available exclusively at HK Parts. Compatible...HKP-21893$239.95 -
HK21E, HK23E Compression Springs - Inner Buffer, Outer Buffer
H&K Heckler & Koch
$59.95H&K HK21E/23E Inner & Outer Buffer Compression Springs An unissued set of inner and outer buffer compression springs for your HK21E/23E buffer, sourced directly from HK Germany. Most HK21E/23E buffers in the U.S are first-generation, which use...HKP-21856$59.95 -
HK MP5K Brace and Stock or Brace Adapter - 10mm / .40
HKP HK Parts
$239.95HKP HK MP5K .40/10mm Brace with Brace/Stock Adapter Designed to adapt UMP style and SB Tactical braces directly to the 40/10 K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40/10mmHKP-21835$239.95 -
Out Of Stock
B&T USW-G17 Conversion Kit
B&T Brugger & Thomet
$550.00B&T USW-G17 Conversion Kit Upgrade your Glock 17 with the B&T USW-G17 conversion kit, transforming it into a Universal Service Weapon for enhanced stability and control. This kit includes a folding stock for improved handling, an optics mounting...HKP-21733$550.00 -
HK MP5 Pistol Stabilizing Brace - SBA4 - FDE
SB Tactical
$294.95SB Tactical HK MP5 SBA4 Pistol Stabilizing Brace - FDE MP5, SBA4 5-position adjustable brace features an integral ambidextrous QD sling socket for a quick install and removal sling attachment. This brace is the perfect addition for your MP5, SP5 or clone...HKP-20352$294.95 -
HK91, G3 A3 Retractable Buttstock - Excellent
H&K Heckler & Koch
$999.95HK G3 & HK 91 A3 Retractable Stock - German These are the final units available no longer produced or offered by HK Germany. Each stock includes two large push pins as a bonus. A beautiful upgrade that truly elevates your G3 or 91 build. Once...HKP-00828$999.95 -
Out Of Stock
HK33, HK91, G3 Heavy Rubber Buttpad For HK A2 Fixed Stocks
H&K Heckler & Koch
$0.00HK German Heavy Rubber Butt Pad The HK German heavy rubber butt pad is a direct replacement to a standard fixed stock butt pad that can be replaced and upgraded in seconds. This butt pad extends the LOP slightly & provides a greater surface area for...HKP-00525$0.00 -
On Sale
HK SL8 Stock Cheek Riser Piece - BLEMISHED
H&K Heckler & Koch
Now: $17.95Was: $34.95HK SL8 Stock Cheek Riser Piece - BLEMISHED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY MISSING SPACER COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES...HKP-01701-BNow: $17.95Was: $34.95 -
On Sale
HK MP5K, SP89, SP5K End Cap with Sling Swivel - 9mm - HK - USED
H&K Heckler & Koch
Now: $63.95Was: $99.95HK MP5K, SP89, SP5K End Cap with Sling Swivel - 9mm - HK - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Each pistol end cap is OEM HK German MP5K and MP5K-N and has the HK German factory buffer...HKP-00394-USEDNow: $63.95Was: $99.95 -
WOOX Edge Stock - Walnut - Picatinny Mount
WOOX
$228.95 - $298.95WOOX Edge Stock - Walnut The WOOX Edge Stock is a premium upgrade for rifles and SMGs featuring a 3 Picatinny stock interface. It blends a precision-machined aluminum body with an American walnut cheek riser for a clean profile, solid lockup, and a...HKP-22460-M$228.95 - $298.95 -
On Sale
HK G3 Butt Plate with Catch Spring - Standard Stock - Green - Used - BLEMISHED
H&K Heckler & Koch
Now: $0.97Was: $2.95HK G3 Standard Stock Buttpad - Green - Used - BLEMISHED SOLD INDIVIDUALLY - CRACKED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This German-made buttpad is an excellent replacement for your...HKP-21865-ODG-BNow: $0.97Was: $2.95 -
A3 Tactical Picatinny Skelestock
JMK
$338.95 - $353.95A3 Tactical Picatinny Skelestock The A3 Tactical Skelestocks are fixed-length folding skeleton stocks meticulously machined from 6061 aluminum. An ambidextrous hinge enables it to fold either to the right or left, depending on the mounting...HKP-22410-M$338.95 - $353.95