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
Bolt Head Locking Roller +5 - 8.05mm - New
HKP HK Parts
Now: $8.95Was: $8.99Roller +5 - New - 8.05mm HK Parts Standard (8.05 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...HKP-19440Now: $8.95Was: $8.99 -
On Sale
JMac 14F, 15F, 24F, 26F Muzzle Device Shims - FaceMount
JMAC Customs
Now: $8.95Was: $9.95JMac Customs Metric Face Mount Shims Custom shims for JMac muzzle devices. This kit includes varying thickness shims to "time" your muzzle device to your desired orientation. These shims are specifically made for JMac 14F, 15F, 24F and 26F muzzle devices...HKP-21446Now: $8.95Was: $9.95 -
HK Trip Lever- Friction - Used - Surplus
H&K Heckler & Koch
$3.95H&K Trip Lever- Friction - Used - Surplus HK German trip lever for HK F/A or registered sear trigger packs in used surplus condition. This is the older friction style trigger pack found on older HK trigger packs and all HK registered sear packs.HKP-17760$3.95 -
On Sale
HK P30 Series Magazine Release - Enhanced
HKP HK Parts
$39.95 - $44.95HKP HK Parts Enhanced Alloy Magazine Release for HK P30, HK P30SK, and HKP30L New HK Parts Enhanced and Over-sized Magazine Release. The oversized magazine Release increases the overall surface area and makes it possible to release the magazine...HKP-21153-M$39.95 - $44.95 -
HK UMP, USC Picatinny Rail Screw
$0.95HK UMP/USC (.40 S&W/.45 ACP/9mm) Picatinny Rail Screw Good spares to have on hand as screws can get damaged or lost.HKP-16562$0.95 -
On Sale
HK91, G3 Firing Pin Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95HK German HK G3, HK91, & PTR Firing Pin Spring This is a common repair and replacement item and is great for spares as this is a common breakage part.HKP-00498Now: $8.95Was: $9.95 -
On Sale
HK MP5, HK53 Locking Roller for Bolt Head - 9mm - 8.02mm
H&K Heckler & Koch
Now: $35.95Was: $39.95H&K +2 Roller For Bolt Head 8.02mm - Over-sized New HK standard (8.02 mm) locking roller. The proper roller size is essential for a proper bolt gap. New HK German, not surplus or used out-of-spec part. Please Note: The price listed is per roller...HKP-00507Now: $35.95Was: $39.95 -
On Sale
HK USP, USP Tactical Magazine Spring - .45 ACP - 12 Round
H&K Heckler & Koch
Now: $4.95Was: $5.95HK Pistol Magazine Spring This is a must-have spare part for all HK pistol owners. HK recommends that for optimum performance, you change out the magazine springs often and swap them regularly when keeping the pistol magazines loaded for long periods...HKP-01426Now: $4.95Was: $5.95 -
On Sale
HK45, P30, P2000 Backstrap Roll Pin
H&K Heckler & Koch
Now: $4.95Was: $5.95HK P30, 45, & P2000 Backstrap Roll Pin This is the commonly replaced roll pin for the rear backstrap that you can swap and change to different sizes. Great spare to have on hand when doing maintenance on your HK pistol. HK suggests...HKP-02274Now: $4.95Was: $5.95 -
On Sale
HK Pistol O-Ring - .40 S&W Green
H&K Heckler & Koch
Now: $4.45Was: $4.95O-ring for .40 caliber barrels Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal between the slide and the barrel Provides a secure lockup and increased...HKP-01985Now: $4.45Was: $4.95 -
HK MP5, HK94 Firing Pin
H&K Heckler & Koch
$49.95H&K MP5, HK94, MP5K, SP89 & SP5K Firing Pin - German Compatible With: MP5 HK94 MP5K SP89 SP5KHKP-00061$49.95 -
On Sale
HK VP9, VP9SK, VP40 Slide Release Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95H&K VP9/VP9SK, VP40 Slide Release Pressure Spring Pressure Spring for Slide Release HK VP9, HK VP40. Compatible With: HK VP9 HK VP9SK HK VP9A1 F, VP9A1 K HK VP40HKP-16788Now: $8.95Was: $9.95