Small Parts
Explore our extensive selection of HK small parts at HKParts, perfect for repairs, upgrades, and custom builds. Our inventory includes high-quality, precision-machined replacement parts and maintenance kits designed for a wide range of HK models. Whether you need push pins, springs, or custom components, our HK-specific small parts ensure optimal performance and durability for your firearm.
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On Sale
HK MP5, HK94 Spring - Firing Pin
H&K Heckler & Koch
Now: $8.96Was: $9.95HK Heckler & Koch HK94, MP5 Spring - Firing Pin German Fits all of the MP5, SP5, SP5K, MP5K 9mm and 40/10 Variants including MP5, 94 clones. The firing pin is one of the most common repair and replacement items. Compatible...Now: $8.96Was: $9.95 -
On Sale
HK MP5, HK94 Spring - Firing Pin - Enhanced
HKP HK Parts
Now: $3.96Was: $4.95MP5 & HK94 Firing Pin Spring - Enhanced The "Enhanced" firing pin spring was analyzed and engineered from scratch with the latest in performance spring technology and an emphasis on reducing stress on the spring and increasing cycle life by 500%...Now: $3.96Was: $4.95 -
On Sale
HK90 Series Roller for Bolt Head 8.00mm - Standard
H&K Heckler & Koch
Now: $25.16Was: $27.95H&K Roller For Bolt Head 8.00mm - Standard The 8mm roller is the proper roller size for the standard "zero" function. The correct 8mm roller is essential for proper head spacing and bolt gap. New HK German, not surplus or used goods, that are worn...Now: $25.16Was: $27.95 -
On Sale
HK GSG-5 Push Pin Upgrade Kit - .22LR
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K GSG-5 Push Pin Upgrade Kit This item is a set of genuine HK German factory push pins that will upgrade all your GSG-5 rifles or pistols to quick take-down push pins. This is one of the most common and desirable upgrades available for your GSG5...Now: $26.95Was: $29.95 -
On Sale
HK Sling Pin - Large - Quick Detach Attachment
HKP HK Parts
Now: $30.36Was: $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 push pin for...Now: $30.36Was: $37.95 -
On Sale
HK 90 Series Pinned Hammer
H&K Heckler & Koch
Now: $26.95Was: $29.95Hammer, Full Auto HK 90 Series Trigger Packs - German HK - Used German HK Hammer- used, surplus in VG-EXC shape and in perfect working order. With the proper hole on the hammer to pin the strut in place. This hammer is the hammer that is most commonly...Now: $26.95Was: $29.95 -
On Sale
HK USP/USPC/45 Match Hammer Spring
H&K Heckler & Koch
Now: $5.36Was: $5.95HK USP, USPC, & HK45 Match Hammer Spring The match hammer spring is also known as the USPC standard hammer spring. This is also the correct spring needed for the light, TGS, and LEM conversion for the USPC & other custom pistol configurations...Now: $5.36Was: $5.95 -
Out Of StockOn Sale
HK Roller +8 - New - 8.08mm
HKP HK Parts
Now: $7.19Was: $8.99Roller +8 - New - 8.08mm HK Parts Standard (8.08 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...Now: $7.19Was: $8.99 -
On Sale
HK Rear Sight Oval Washer
HKP HK Parts
Now: $2.36Was: $2.95HKP Rear Sight Oval Washer HK German oval washer for the rear sight diopter style assemblies. This is the needed washer used in conjunction with the locking washer. Fits and works with all diopter-style rear sights.Now: $2.36Was: $2.95 -
On Sale
HK MP5, MP5K Spring - Firing Pin
H&K Heckler & Koch
Now: $29.66Was: $32.95H&K MP5 & MP5K Firing Pin Spring The latest firing pin spring features a stronger and more durable braided design, surpassing the standard non-braided spring in performance and longevity. Compatible With: HKMP5 HK MP5K HK SP5 HK SP5K ...Now: $29.66Was: $32.95 -
On Sale
HK MP5, HK94, MP5K, SP89 Firing Pin - Steel
HKP HK Parts
Now: $13.98Was: $17.47MP5, MP5K, 94, & SP89 Firing Pin - Steel Each part is made using the factory HK material and specifications from original HK German blueprints. Compatible With: MP5, HK94 MP5K, SP89, SP5K MP5 40, 10mm, .357 Sig Zenith, POF, Omega, DT,...Now: $13.98Was: $17.47 -
On Sale
HK91, G3 Rear Push Pin Reinforcement Weldment
PTR
Now: $17.95Was: $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...Now: $17.95Was: $19.95