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
HK417, MR762 Magazine Catch Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95Heckler and Koch Magazine Catch Spring for HK417 and HK MR762 New HK German manufacture. Factory correct magazine catch for the magazine release. Compatible With: HK417, MR762 G28HKP-16520Now: $8.95Was: $9.95 -
On Sale
HK P30 Series Left Slide Release Lever
H&K Heckler & Koch
Now: $49.95Was: $54.95Slide Release Lever Left - P30 Latest HK production. Compatible With: P30 P30SKHKP-01879Now: $49.95Was: $54.95 -
On Sale
HK MP5 Rear Sights Locking Washer
MKE
Now: $1.95Was: $2.45MKE HK MP5 Rear Sights Locking Washer Secures the rear sight assembly on MKE and HK MP5 models to maintain proper alignment. Compatible With: Century Arms AP5 HK MP5/MP5K HK SP5/SP5K Will work with all 90 series firearmsHKP-22240Now: $1.95Was: $2.45 -
On Sale
HK VP9, VP40 Disassembly Lever
H&K Heckler & Koch
Now: $22.95Was: $24.95Disassembly Lever VP9 & VP40 New HK German VP9, VP40 take down lever. This is the lever that is designed to take the remove the slide from the frame. All steel manufacture. Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40HKP-16818Now: $22.95Was: $24.95 -
On Sale
HK MP5 Locking Roller +4 - .40 S&W
HKP HK Parts
Now: $10.95Was: $11.95HK US MP540 Undersized Locking Roller, +4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need...HKP-17562Now: $10.95Was: $11.95 -
On Sale
HK USP Decocking Lever - Left Side V1, V5, V9
H&K Heckler & Koch
Now: $53.95Was: $59.99H&K HK USP Left Side V1/5/9 Decocking Lever A Heckler and Koch genuine part. This item allows a right-handed shooter to have the safety and or decocking functions on the LEFT side of the firearm. This is to be used in conjunction with the correct...HKP-01169Now: $53.95Was: $59.99 -
On Sale
HK21E, HK23E Rear Sight Base
HKP HK Parts
Now: $31.95Was: $38.95HKP HK Parts Rear Sight Base for HK21E, HK23E US manufactured billeted from solid ordnance grade bar stock. Each unit is precisely machined to factory tolerances. Requires post installation machining to accommodate a scope. Compatible...HKP-21467Now: $31.95Was: $38.95 -
On Sale
HK45, HK45C Detent Plate - Variant 5,6,9
H&K Heckler & Koch
Now: $49.95Was: $54.95H&K Detent Plate New HK German manufacture safety ONLY detent plate. This detent plate will convert the firearm to safety only with no decocking functions. Compatible With: HK45 HK45 Tactical HK45C HK45C TacticalHKP-02079Now: $49.95Was: $54.95 -
On Sale
HK416, MR556 Threaded Pin for Buttstock Release Inserts - E1, E2
H&K Heckler & Koch
Now: $8.95Was: $9.99H&K HK MR556/416 Threaded Pin for E1/E2 Buttstock Release Lever Insert New HK German manufactured E1/E2 stock release and tightening screw that takes the slack and slop out of the stock when in desired position. Compatible With: HK MR556 HK 416HKP-16604Now: $8.95Was: $9.99 -
On Sale
HK G36, SL8 Firing Pin
GSG9
Now: $24.95Was: $28.95HK G36, G36K, G36C & SL8 Firing Pin - USA A must have spare part for all G36 models. Made in the USA. Fully machined and nitrided for superior strength. Compatible With: G36 G36K G36C SL8HKP-18256Now: $24.95Was: $28.95 -
On Sale
HK MP5, HK91, G3, HK33 Cocking Tube Detent End Cap
H&K Heckler & Koch
Now: $4.45Was: $4.95HK German Cocking Tube End Cap/Dust Cap Detent HK German cocking tube detent for all steel and aluminum cocking tube end caps. Made of steel and finished in black.HKP-18050Now: $4.45Was: $4.95 -
On Sale
HK Mark 23 Firing Pin Block Spring
H&K Heckler & Koch
Now: $8.95Was: $9.99HK Mark 23 Firing Pin Block Spring Compatible With: Mark 23 Socom .45HKP-01599Now: $8.95Was: $9.99