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
HK416, MR556 Takedown Pin - Front - A4 Style
H&K Heckler & Koch
Now: $24.95Was: $26.95H&K HK416, MR556 A4 Front Takedown Pin The HK416 front takedown pin is a German-made component designed to securely fasten the upper and lower receivers. Precision-machined for a proper fit, it ensures reliable function and serves as an ideal...HKP-21862Now: $24.95Was: $26.95 -
Out Of Stock
B&T Takedown Pin Rear
B&T Brugger & Thomet
$12.95B&T APC Takedown Pin - Rear Factory B&T rear take down pin for the APC receiver. Compatible With: APC Series Standard receiver Glock receiver Sig receiverHKP-21727$12.95 -
On Sale
HK USP Series Hammer Strut Pin
H&K Heckler & Koch
Now: $6.95Was: $7.95HK USP Series Hammer Strut Pin Cylinder Pin ISO 8750 - 1.5 x 8mm. Compatible With: HK USP 9mm HK USP 40 S&W HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact 45 ACPHKP-01633Now: $6.95Was: $7.95 -
On Sale
HK USP, 45, 45C New Style Bobbed Hammer
H&K Heckler & Koch
Now: $53.95Was: $59.95HK USP, USPC & HK45 & HK45C Bobbed Hammer - New Style This has the shorter, lower-profile "bobbed" hammer. The new style hammer has a cutout for 2005 and later production. Compatible With: USP 9mm & USP Compact 9mm USP 40 & USP Compact...HKP-01589Now: $53.95Was: $59.95 -
On Sale
HK33, HK53, HK93 Firing Pin - Stainless Steel
HKP HK Parts
Now: $22.95Was: $24.95HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steel Compatible With: HK 93/53/33HKP-17798Now: $22.95Was: $24.95 -
On Sale
HK90 Trigger Spring- 3 Position - SEF and Navy
H&K Heckler & Koch
Now: $8.95Was: $9.95H&K HK SEF & Navy 3 Position Trigger Spring Elevate your HK 90 series performance with a factory-fresh trigger spring, designed for both semi and full-auto models. These are an essential upgrade for any 90 series owner, ensuring optimal...HKP-22178Now: $8.95Was: $9.95 -
On Sale
HK33, HK53, HK93, HK21E, 23E Cocking Handle Pivot Pin
H&K Heckler & Koch
Now: $17.95Was: $18.95H&K 93/53/33 & HK21E/23E Cocking Handle Pivot Pin This genuine H&K cocking handle pivot pin allows smooth operation of the charging handle assembly. While the nipple on the 21E pin is slightly shorter than the 33 pin, it remains fully...HKP-21746Now: $17.95Was: $18.95 -
On Sale
HK45 Compact Hammer Spring
H&K Heckler & Koch
Now: $9.95Was: $10.95Hammer Spring For HK45 Compact This part is shorter than the HK45 hammer spring and is used on the HK45C only.HKP-01805Now: $9.95Was: $10.95 -
On Sale
HK MP7, G36 Firing Pin Bolt O-Ring
H&K Heckler & Koch
Now: $8.95Was: $9.95HK G36 & MP7 Firing Pin - Bolt O-Ring Compatible With: HK G36 HK MP7HKP-01858Now: $8.95Was: $9.95 -
On Sale
HK MP5F, MP5 Compression Spring - Cocking Lever Support
H&K Heckler & Koch
Now: $8.95Was: $9.95H&K MP5F & MP5 40,10 Cocking Support Handle Spring One of these springs is required for use with the cocking handle/support assembly. You need the following - MP5 40 cocking tube support, MP5 40 cocking handle, and the cocking handle spring to...HKP-00426Now: $8.95Was: $9.95 -
Out Of Stock
HK -2 Roller For Bolt Head 7.98mm - Under-sized
H&K Heckler & Koch
$19.95H&K -2 Roller For Bolt Head 7.98mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -2 roller. Please Note: The price listed is per roller. Order 2 (pair) for...HKP-00505$19.95 -
On Sale
HK MP5, HK94, SP5 Magazine Spring - 10 Round
H&K Heckler & Koch
Now: $5.95Was: $6.9510 Round Magazine Spring - HK MP5, 94, SP5 A must-have repair and replacement part great for spares. Compatible With: All factory spec steel 10 round MP5, 94 style curved magazinesHKP-19454Now: $5.95Was: $6.95