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
H&K Heckler & Koch
Now: $44.96Was: $49.95H&K HK 417/MR762 Magazine Catch This is the actual mag catch for the MR762 and HK 417 family of firearms. A great spare to have on hand. Compatible With: HK 417 HK MR762Now: $44.96Was: $49.95 -
On Sale
HK USP .45 ACP Extractor
H&K Heckler & Koch
Now: $44.96Was: $49.95HK German Extractor for USP 45 & USP Tactical .45 Full Size Pistol Compatible With: USP 45 USP 45 Tactical USP 45 Expert, EliteNow: $44.96Was: $49.95 -
On Sale
HK G36, SL8 Barrel Retaining Nut - 5.56 / .223
H&K Heckler & Koch
Now: $26.95Was: $29.95HK G36 & SL8 Barrel Retaining Nut - German HK Compatible With: SL8 (all models and variants) G36E G36K G36C All other G36 VariantsNow: $26.95Was: $29.95 -
Out Of StockOn Sale
HK UMP, USC, G36, SL8 Compression Spring - Index Plate
H&K Heckler & Koch
Now: $7.16Was: $7.95H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate Compression SpringNow: $7.16Was: $7.95 -
Out Of StockOn Sale
HK USC, SL8 Buttstock Allen Screw
H&K Heckler & Koch
Now: $11.65Was: $12.95Buttstock Allen Screw For HK USC Or HK SL8 rifles. This is the screw that holds the stock assembly onto the upper receiver of the HK USC & SL8.Great for replacements or to have as spares. This item is factory HK and a common spare.Now: $11.65Was: $12.95 -
On Sale
HKP HK MP5 (.40 S&W) Locking Roller -2
HKP HK Parts
Now: $9.56Was: $11.95HK US MP540 Undersized Locking Roller, -2 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...Now: $9.56Was: $11.95 -
On Sale
HKP HK MP5 (.40 S&W) Locking Roller +6
HKP HK Parts
Now: $9.56Was: $11.95HK US MP540 Locking Roller, +6 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 to...Now: $9.56Was: $11.95 -
On Sale
B&T Takedown Pin Rear
B&T Brugger & Thomet
Now: $11.65Was: $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 receiverNow: $11.65Was: $12.95 -
On Sale
HK MP5SF Bushing Sleeve - Elbow Spring with roller - USED
H&K Heckler & Koch
Now: $2.96Was: $5.95HK MP5SF Bushing Sleeve - Elbow Spring with roller - USED USED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. Features: Precision-machined elbow spring and roller used in traditional roller-delayed...Now: $2.96Was: $5.95 -
On Sale
B&T TP9, MP9 Extractor Spring
B&T Brugger & Thomet
Now: $8.96Was: $9.95B&T TP9, MP9 Extractor Spring Swiss-manufactured TP9 and MP9 extractor spring. Compatible With: B&T TP9, MP9Now: $8.96Was: $9.95 -
On Sale
HK VP9, VP40 Grip Panel Left Side - Medium - Gray
H&K Heckler & Koch
Now: $22.45Was: $24.95H&K VP9, VP40 Grip Panel Left Side - Medium - Gray New HK German manufactured. Left side, medium size. Perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. Compatible With: HK VP9 HK VP40 HK VP9A1 F HK VP9A1 KNow: $22.45Was: $24.95 -
On Sale
HK P30SK Backstrap - Small - Black
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K P30SK Backstrap - Small - Black Compatible With: HK P30SKNow: $26.95Was: $29.95