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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Fixed Stock - OD Green - Surplus - HK 91, G3, PTR
H&K Heckler & Koch
$25.95Fixed Stock - OD Green - Surplus - HK 91, G3, PTR Used Olive Drab green German surplus stock complete. Ready to install on your HK or clone rifle. Used in perfect working condition. Each stock includes all parts to be a complete stock ready to use on...HKP-16329$25.95 -
H&K 91/G3/MSG90 (7.62x51/.308) 20 Round Magazine - Aluminum - EXCELLENT/LIKE NEW
H&K Heckler & Koch
$16.95HK G3, HK91, & PTR91 German 20 Round Magazine - Alloy German Manufactured Aluminum Paratrooper Magazines In Excellent - Like New Condition Perfect for your HK G3/PTR style firearm. Each unit is German manufactured, and a great deal for the condition...HKP-00524$16.95 -
HKP MP5 Replacement Buffer for Folding Stock or End Cap
HKP HK Parts
$3.49HKP 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 -
SB Tactical MP5 & SP5 Folding Brace
SB Tactical
$119.95SBT5A Side Folding Brace For The HK MP5, SP5 model Features: Each brace comes assembled ready to install no assembly required Made in the USA B&T inspired design & styling The finest folding pistol brace option for your HK MP5 model Seamless...HKP-18017$119.95 -
HKP HK 416 Pistol Brace Adapter/AR .22LR Stock Adapter
HKP HK Parts
$34.95HKP HK 416 Pistol Brace Adapter/AR .22LR Stock Adapter Compatible With: AR 22, HK /Walther 416 .22lr Specifications: Made in the USA Easy to install no gunsmithing required machined from solid billeted alloy Hard coat anodized for a lifetime of...HKP-17442-M$34.95 -
On Sale
MP5, SP5 - A2 Fixed Stock-Black
Now: $139.95Was: $179.95MP5 A2 Fixed Stock - US Made Each stock counts as one US-made compliant part. Perfect for that build where you require a US-made part to be compliant. This is the finest US-made MP5 stock, as it has a rubberized backplate to reduce the felt...HKP-02314Now: $139.95Was: $179.95 -
On Sale
SB Tactical HK MP5, HK SP5 Retractable Pistol Stabilizing Brace - Black
SB Tactical
Now: $263.95Was: $329.95SB Tactical HK MP5, HK SP5 Retractable Pistol Stabilizing Brace - Black The HK MP5, SP5 pistol stabilizing brace is 3-position fully adjustable pistol brace and is comprised of a billeted 6061 alloy hard-coat anodized aluminum adapter, steel...HKP-19161Now: $263.95Was: $329.95 -
H&K 90 Series Butt Stock Push Pin
H&K Heckler & Koch
$3.95H&K 90 Series Butt Stock Push Pin Each large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. Large push pins are for the stock and the small push pin is for the forearm and lower. The HK German genuine push...HKP-18038$3.95 -
HK German Butt Stock Push Pin
H&K Heckler & Koch
$8.95HK German Butt Stock Push Pin Each large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. These are great replacement or spare parts to keep on hand as they fit all of the 90-series firearms below. The large push...HKP-00076$8.95 -
On Sale
SB Tactical HK MP5 .22LR Pistol Stabilizing Brace
SB Tactical
Now: $99.95Was: $149.95SB Tactical - HK MP5 .22LR Pistol Stabilizing Brace The SBT5-22 Pistol Stabilizing Brace® enhances your HK MP5 .22LR with an integral, side-folding polymer endplate. The SBT5-22 gives you all of the advantages of a pistol with improved control by...HKP-21226Now: $99.95Was: $149.95 -
H&K 91/G3 (7.62x51/.308) 20 Round Aluminum Magazine
H&K Heckler & Koch
$24.95New German 20 Round Aluminum Magazine - G3, 91, PTR Brand new old stock German manufactured paratrooper alloy magazine. This item is no longer in production and is getting harder to find in new condition. These mags are the real deal, perfect for your HK...HKP-00222$24.95 -
H&K 93/53/91/G3 Cocking Handle Spring
H&K Heckler & Koch
$5.74New Style Cocking Handle Lever Spring - German This is the latest HK German spring design with the factory HK anti-corrosion plating applied. The factory HK springs last longer and is more tolerant to corrosion. A perfect upgrade for your older...HKP-00348$5.74 -
Gear Head Works Tailhook Mod 1C - Black
Gear Head Works
$164.95Gear Head Works Tailhook Mod 1C - Black The Patented Tailhook MOD 1C is 30% lighter and 30% more compact than or standard Mod 1. With a profile similar to the SCW Tailhook it truly is the most compact pistol brace on the market today. At less than an...HKP-19655$164.95 -
SB Tactical MP5K/SP89/SP5K 9mm Side Folding Brace - Polymer
SB Tactical
$119.99HK MP5K, SP89, SP5K & Clone - Side Folding Pistol Stabilizing Brace MP5K, SP5K, Zenith Z5P, Z-5K Folding Stabilizing Brace System. This is current production with a polymer brace adapter. ***Please note some clones will need some slight fitting...HKP-21358$119.99 -
B&T HK MP5K, HK SP89, HK SP5K Folding Stock - Black
B&T Brugger & Thomet
$274.95B&T HK MP5K, HK SP89, HK SP5K Folding Stock - Black These are hard to find and the real deal. 100% Swiss Made. Compatible with all HK MP5K's, SP89's, SP5K's, or clones (NFA rules apply). This is a military-grade stock. B&T is an HK-OEM...HKP-00172$274.95 -
On Sale
HKP HK 416 .22 Picatinny Pistol Brace Adapter/Stock Adapter
HKP HK Parts
Now: $39.95Was: $62.95HKP HK 416 .22 Picatinny Pistol Brace Adapter/Stock Adapter CNC billet machined in the USA from one piece of aircraft grade aluminum. Each adapter was fitted for optimal use on the HK 416 .22 Pistol models with a seamless fit. Each unit has a left and...HKP-19742Now: $39.95Was: $62.95 -
H&K MP5, SP5 - A2 Fixed Stock
H&K Heckler & Koch
$199.95HK German MP5, SP5 & HK94 - A2 Fixed Buttstock Compatible With: HK MP5, 94, HK SP5 MP5SD MP5 F MP5 40/10 (buffered stock would be optimal) Zenith Z5-RS, Omega MP5, DT54, TPM MP5, etc. Clones and other custom builds Please Note: ALL NFA...HKP-00169$199.95 -
HKP HK 91/93/33/53/G3 (5.56/.223) & (7.62x51/.308) Hex Buffer Screw - Front
HKP HK Parts
$0.69Enhanced Hex Style Buffer Screw New upgraded hex head style front buffer screw. Each buffer assembly uses 2 of these screws to affix the buffer to the back plate and central stock section. The old style buffer screws were used the older slotted head and...HKP-17883$0.69 -
Choate MP5K/SP89/SP5K 9mm Folding Stock
Choate
$199.95MP5K, SP89 & SP5K Tactical Folding Stock - US Made Each stock features the same quick, open steel housing and folding arm found on all HK stock offerings. Each stock is backed by the manufacturer's lifetime warranty but built tough enough that you...HKP-00390$199.95 -
Retractable Stock Buffer - MP5 A3 - USA
$7.74MP5 A3 Retractable Stock "H" Buffer For All HK A3 Retractable Stocks The A3 stock buffer is a high-wear and replacement item that needs replacement when torn, cracked, brittle, discolored, and worn. These units are from the same material and durometer as...HKP-14012$7.74 -
H&K HK 93/53/33 (5.56/.223) 30 Round Magazine - Steel
H&K Heckler & Koch
$80.00HK93, HK33, & HK53 - 30 Round Magazine HK Factory German. All-steel latest production magazine and hard to find. This magazine was discontinued in 2021 and is no longer in production. Stock up as we have the last remaining units available...HKP-00484$80.00 -
On Sale
H&K MP5, SP5, HK94 4 Position A3 F Retractable Rear Stock
H&K Heckler & Koch
Now: $549.95Was: $624.95HK German MP5 & HK SP5 A3 "F" Style Retractable Rear Stock - 4 Position This German HK A3 retractable is the latest & greatest HK retractable German stock available. The F stock is designed to take the abuse of heavy +P & +P+ rounds as well...HKP-17614Now: $549.95Was: $624.95 -
HKP Single Point Sling - HK Style - Black
HKP HK Parts
$34.95HK Single Point Sling in Black This is a very nice sling for the money. It also has quick detach buckles that allow quick changes and removal. Specifications: Composition: Thick, all-black, heavy-duty Style: Bungee-type design for...HKP-02644$34.95 -
H&K 91/93/33/53/G3 (5.56/ 223) & (7.62x51/.308) Buffer Screw Locking Washer - Zinc Plated
H&K Heckler & Koch
$0.25HK G3, 91, PTR & HK93, 33, 53 - Locking Washer For Small Buffer Screws New not surplus latest generation of G3, 91, PTR toothed locking washer. Zinc plated (galvanized) as to not corrode or rust like the older style units found on surplus stocks...HKP-17882$0.25 -
On Sale
H&K Push Pin Set - MP5, G3/91, 33/53/93
H&K Heckler & Koch
Now: $13.95Was: $15.49HK Set Of Two (One Large And One Small) Push Pins -Used These are great replacements or spare parts to keep on hand. Compatible With: HK91 & G3 53, 33, and 93 MP5, SP5, SP89 PTR and GSG-5 family of guns. Please Note: The GSG5 will take...HKP-00673Now: $13.95Was: $15.49 -
HKP Quick Detach Sling Attachment Sling Pin - Small
HKP HK Parts
$37.95HKP Quick Detach Sling Attachment Sling Pin - Small The small push pin is used to retain the forearm to the receiver on the 90 series of firearms. The QD sling pin is a great replacement item as it will allow the user to simply swap the push pin for the...HKP-18071$37.95 -
H&K MP5K/SP89/SP5K 9mm HK Marked Folding Stock
H&K Heckler & Koch
$399.95HK Marked MP5K, SP5K, SP89 & MP5K-N, PDW Folding Stock This is the original "HK" logo marked HK factory stock, found on all HK German MP5K's or PDW's. Each stock is marked HK and uses the HK German backplate/buffer factory assembly. Overall Length is...HKP-00391$399.95 -
Choate MP5 & HK94 End Cap & Sling Swivel
Choate
$36.95Choate 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 -
H&K Standard Stock Buttpad - OD Green - Surplus
H&K Heckler & Koch
$2.95H&K Standard Stock Buttpad - OD Green - Surplus HK German manufactured surplus A2 style stock buttpad in dark OD green. Used in fair condition. Compatible With: G3 & HK91HKP-17364$2.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Rear Stock Axle Pin - Swiss
Swiss
$14.95UMP & USC Rear Stock Axle Pin - Swiss This is the rear stock pin that allows you to attach the stock to either the factory receiver of a UMP or for those who are doing the USC to UMP conversion. This pin is required to...HKP-02591$14.95 -
MFI Snap Sling Hook 1.25"
MFI
$4.95HK Style 1.25" Snap Hook For Sling This sling hook is designed for wider 1.25" width slings. Made in the USA, and is great for HK sling projects and spares. We offer the 1" and the 1.25" sling hooks for all your HK projects.HKP-01523$4.95 -
HKP Quick Detach Sling Attachment Sling Pin - Large
HKP HK Parts
$37.95HKP Quick Detach Sling Attachment Sling Pin - Large The large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. The QD sling pin is a great replacement item as it will allow the user to simply swap the pushpin for...HKP-18070$37.95 -
MKE HK MP5 Retractable Buttstock
MKE
$329.95MKE HK MP5 / AP5 Retractable Buttstock The missing piece to add the iconic appearance to your MP5-AP5 Clone. The collapsible design offers a custom length of pull for optimal comfort and control, while the easy-to-install mounting system offers...HKP-21183$329.95 -
Bill Springfield HK 91 Improved Buffer System
Bill Springfield
$79.95HK Improved Buffer System - HK91 Bill Springfield developed a new piston and spring assembly that reduces the felt recoil up to 30% on any HK or clone utilizing the standard assembly. This piston is 2x longer than stock, the spring is about 25% lighter...HKP-19914$79.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Folding Stock
H&K Heckler & Koch
$138.95HK German UMP Folding Buttstock Brand new German HK folding stock. This is a required part for the USC-UMP Conversion using the (stock block B). All UMP folding stocks come with an HK date code. Compatible With: HK UMP .45 HK UMP .40 HK UMP 9mm HK...HKP-00252$138.95 -
H&K 91/G3 (7.62x51/.308) Wood Stock - Surplus
H&K Heckler & Koch
$119.95HK German G3, 91, & PTR Wood Stock Complete - USED These stock sets were in use with the German military and are used in varying degrees of condition, ranging from good to very good shape overall. These are rare and are getting harder to...HKP-02554$119.95 -
On Sale
SB Tactical MP5K/SP89/SP5K 9mm Side Folding Brace
SB Tactical
Now: $169.95Was: $249.95HK MP5K, SP89, SP5K & Clone - Side Folding Pistol Stabilizing Brace MP5K, SP5K, Zenith Z5P, Z-5K Folding Stabilizing Brace System. These are the last remaining units with an aluminum folding adapter as SB tactical has now switched over to a polymer...HKP-18016Now: $169.95Was: $249.95 -
B&T HK MP5K, HK SP5K UMP B&T Folding Stock - Black
B&T Brugger & Thomet
$324.95B&T HK MP5K, HK SP5K UMP B&T Folding Stock B&T stock foldable polymer with adapter for HK MP5K. These are hard to find and the real deal. 100% Swiss & German HK made. This is a military grade stock. B&T Switzerland has supplied these...HKP-16944$324.95 -
On Sale
H&K MP5 , HK94 Factory A3 Stock
H&K Heckler & Koch
Now: $780.95Was: $939.95H&K MP5 & HK94 Factory A3 Stock The original Navy-style German HK MP5 A3 stock is no longer in production and is quite hard to find as they have been replaced with the MP5 F-style stock. Each offering is the second generation MP5 A3 Navy-style...HKP-00167Now: $780.95Was: $939.95 -
PTR HK 91/G3 (7.62x51/.308) Rear Push Pin Reinforcement Weldment
PTR
$19.95HK91, G3, PTR, CETME Push Pin Reinforcement Weldment HK91/G3/PTR91 or CETME steel receiver flat weldment that is added to the rear of the receiver where the 2 large stock push pins install to reinforce this section of the receiver against damage or use...HKP-18224$19.95