Small Parts

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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  • Out Of Stock
    On Sale
    New - MM HK 21 (7.62x51/.308) Belt Box Adapter - HKP-01844 HK 21 Ammunition Belt Box Adapter

    HK 21 Ammunition Belt Box Adapter

    Michaels Machines

    Now: $247.45
    Was: $274.95
    Belt Box Adapter A new custom-made adapter - allows you to use HK German factory HK21E belt boxes on the HK21 older style or original style belt feds. It is a drop-in design that will enable easy and quick use of the superior HK21E belt boxes...
    Now: $247.45
    Was: $274.95
    Out Of Stock
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    Now: $247.45
    Was: $274.95
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  • On Sale
    New - HKP HK MP5 (.40 S&W) Locking Roller -2 - HKP-17563
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    HKP HK MP5 (.40 S&W) Locking Roller -2

    HKP HK Parts

    Now: $9.56
    Was: $11.95
    HK 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: $9.56
    Was: $11.95
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  • On Sale
    New - B&T Takedown Pin Rear - HKP-21727 B&T Takedown Pin Rear
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    B&T Takedown Pin Rear

    B&T Brugger & Thomet

    Now: $11.65
    Was: $12.95
    B&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 receiver
    Now: $11.65
    Was: $12.95
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    Was: $12.95
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  • On Sale
    New - H&K Elbow Spring Spacer For Full-Auto - USED - HKP-03330-USED HK MP5SF Bushing Sleeve - Elbow Spring with roller - USED
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    HK MP5SF Bushing Sleeve - Elbow Spring with roller - USED

    H&K Heckler & Koch

    Now: $2.96
    Was: $5.95
    HK 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: $2.96
    Was: $5.95
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    Was: $5.95
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  • On Sale
    New - B&T TP9/MP9 Extractor Spring - HKP-17300 B&T TP9, MP9 Extractor Spring
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    B&T TP9, MP9 Extractor Spring

    B&T Brugger & Thomet

    Now: $8.96
    Was: $9.95
    B&T TP9, MP9 Extractor Spring Swiss-manufactured TP9 and MP9 extractor spring. Compatible With: B&T TP9, MP9
    Now: $8.96
    Was: $9.95
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  • On Sale
    New - H&K VP9, VP40 Grip Panel Left Side - Medium - Gray - HKP-18122 HK VP9, VP40 Grip Panel Left Side - Medium - Gray
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    HK VP9, VP40 Grip Panel Left Side - Medium - Gray

    H&K Heckler & Koch

    Now: $22.45
    Was: $24.95
    H&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 K
    Now: $22.45
    Was: $24.95
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    Was: $24.95
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  • On Sale
    New - H&K P30SK Backstrap - Small - Black - HKP-18081
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    HK P30SK Backstrap - Small - Black

    H&K Heckler & Koch

    Now: $26.95
    Was: $29.95
    H&K P30SK Backstrap - Small - Black   Compatible With: HK P30SK  
    Now: $26.95
    Was: $29.95
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    Now: $26.95
    Was: $29.95
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  • On Sale
    New - H&K HK USP Hammer, Hammer Strut Roll Pin - HKP-02268
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    HK USP Hammer, Hammer Strut Roll Pin

    H&K Heckler & Koch

    Now: $5.36
    Was: $5.95
    HK USP Hammer, Hammer Strut Roll Pin This pin installs in the hammer and makes contact with the hammer strut.
    Now: $5.36
    Was: $5.95
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    Now: $5.36
    Was: $5.95
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  • On Sale
    New - HK G36/SL8 (5.56/.223) Bolt Heads Ejector - HKP-18371 HK G36, SL8 Bolt Head Ejector - USA
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    HK G36, SL8 Bolt Head Ejector - USA

    Now: $12.55
    Was: $13.95
    HK G36/SL8 Ejector For All G36, SL8 bolts -US Made
    Now: $12.55
    Was: $13.95
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    Now: $12.55
    Was: $13.95
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  • On Sale
    New - B&T Bolt or Suppressor Pouch - Small - Velcro Mount - HKP-21886 Bolt or Suppressor Pouch - Small - Velcro Mount
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    Bolt or Suppressor Pouch - Small - Velcro Mount

    B&T Brugger & Thomet

    Now: $7.46
    Was: $19.95
    B&T Bolt or Suppressor Pouch - Small - Velcro Mount The B&T Bolt Pouch is a Velcro attaching pouch to securely hold and protect your .308 bolt during transport and field operations. Designed for the B&T APR338 bolt but will fit other,...
    Now: $7.46
    Was: $19.95
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    Now: $7.46
    Was: $19.95
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  • Out Of Stock
    On Sale
    New - H&K VP9, VP40 Backstrap - Small - Gray - HKP-18125 HK VP9, VP40 Backstrap - Small - Gray

    HK VP9, VP40 Backstrap - Small - Gray

    H&K Heckler & Koch

    Now: $17.95
    Was: $19.95
    H&K VP9, VP40 Backstrap - Small - Gray   Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40
    Now: $17.95
    Was: $19.95
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    Was: $19.95
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  • Out Of Stock
    On Sale
    New - H&K HK Mark 23 Hammer Strut Spring - HKP-01581

    HK Mark 23 Hammer Strut Spring

    H&K Heckler & Koch

    Now: $8.05
    Was: $8.95
    HK Mark 23 Hammer Strut Spring
    Now: $8.05
    Was: $8.95
    Out Of Stock
    Qty in Cart: 0
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    Now: $8.05
    Was: $8.95
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