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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Out Of StockOn Sale
HK MP5, SP5 Folding Stock - 11"
Zenith
Now: $89.95Was: $99.95Zenith HK MP5, SP5 Folding Stock Folds to the side for compact storage while providing a solid, stable shoulder stock when deployed. No modifications required on in-spec MP5 receivers. Specifications: Polymer and fiberglass reinforced Weight: 14.4...Now: $89.95Was: $99.95 -
Out Of StockOn Sale
HK MP5K, SP5K Folding Stock - 10"
Zenith
Now: $89.95Was: $99.95Zenith HK MP5K, SP5K, SP89 Folding Stock Folds to the side for compact storage while providing a solid, stable shoulder stock when deployed. No modifications required on in-spec MP5K receivers. Specifications: Polymer and fiberglass reinforced Weight:...Now: $89.95Was: $99.95 -
On Sale
HK SL8 Handguard - USED - Grey
H&K Heckler & Koch
Now: $34.95Was: $99.95H&K SL8 Stock & Handguard - USED - Grey ONLY 1 UNIT AVAILABLE Upgrade your HK SL8 with this genuine German handguard. Compatible With: HK SL8 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINALNow: $34.95Was: $99.95 -
On Sale
HK MP5K 40/10 Stock or Brace Adapter - BLEMISHED
HKP HK Parts
Now: $64.09Was: $113.95HK MP5K 40/10 Brace/Stock Adapter - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Easily attach your favorite A2 style stock to your MP5K 40/10 with...Now: $64.09Was: $113.95 -
On Sale
Skeleton Stock 8" - SS-8 - INCOMPLETE - BLEMISHED
JMAC Customs
Now: $157.46Was: $284.99JMAC Customs SS-8 - INCOMPLETE - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED MISSING 1913 FOLDING MECHANISM COSMETICALLY BLEMISHED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Skeleton stock 8" 2x...Now: $157.46Was: $284.99 -
On Sale
B&T APC223, APC300, APC308 Stock Conversion Kit
B&T Brugger & Thomet
Now: $148.50Was: $165.00B&T APC223/300/308 Stock Conversion Kit B&T factory buttstock conversion kit for converting a retractable brace system to a retractable stock system. Also great to have on hand for replacement parts. Compatible With: B&T APC223 B&T...Now: $148.50Was: $165.00 -
On Sale
HK416 Retractable Stock - .22LR PDWC - Incomplete - BLEMISHED
HKP HK Parts
Now: $149.96Was: $349.95HKP, Walther 416 .22LR PDWC Retractable Stock - Black - Incomplete - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED INCOMPLETE Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. The...Now: $149.96Was: $349.95 -
On Sale
AR15 Buffer Tube - Hex - 7.5" - BLEMISHED
Sig Sauer
Now: $14.96Was: $44.95SIG Sauer Phase 5 Hex Buffer Tube for AR-15 Pistols - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This buffer...Now: $14.96Was: $44.95 -
On Sale
HK MP5 QD End Cap with Buffer - Black - USED
HKP HK Parts
Now: $44.96Was: $99.95HK MP5 QD End Cap with Buffer - Black - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. With this MP5 QD end cap upgrade you will get a heavier buffer to...Now: $44.96Was: $99.95 -
On Sale
HK416, MR556 Receiver End Plate - AS IS - BLEMISHED
Now: $7.95Was: $19.95HK MR556/416 Receiver End Plate - BLEMISHED CONDITION MAY VARY - SEE PHOTOS INSTALLATION MARKS. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Aftermarket...Now: $7.95Was: $19.95 -
On Sale
HK MP5 Stock- Folding - Length Adjustable - Helmet Stock - BLEMISHED
B&T Brugger & Thomet
Now: $217.46Was: $379.95B&T MP5 Folding Stock/Length Adjustable Helmet Stock - BLEMISHED ONLY 4 UNITS AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL...Now: $217.46Was: $379.95 -
On Sale
HK MP5K Stock or Brace Adapter - 10mm / .40 S&W
HKP HK Parts
Now: $103.96Was: $129.95HKP HK MP5K .40/10mm Brace/Stock Adapter Add your favorite brace or stock to your 40 or 10mm MP5K with the HK Parts stock adapter. Designed to adapt UMP style and B&T folding stocks directly to the 40/10 K platform. Made in the USA and...Now: $103.96Was: $129.95