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.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • New - HKP HK MP5 (.40 S&W) Locking Roller +2 - HKP-17564
    Add to Cart

    HK MP5 Locking Roller +2 - .40 S&W

    HKP HK Parts

    $11.95
    HK US MP5 .40 S&W Locking Roller, +2 The proper roller size is essential for proper headspacing of bolt gap. +2 / 8.02mm 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...
    HKP-17564
    $11.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.95
    Subtotal:
  • HK416, MR556 Magazine Catch - Ambi HK416, MR556 Magazine Catch - Ambi
    Add to Cart

    HK416, MR556 Magazine Catch - Ambi

    H&K Heckler & Koch

    $104.95
    Heckler and Koch Ambidextrous Magazine Catch for HK416 and HK MR556  Factory HK ambi magazine catch, release. Compatible With: HK416A5, MR556 A4 NOT compatible with earlier variants with single-side controls
    HKP-22289
    $104.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $104.95
    Subtotal:
  • New - H&K HK P7M8/P7M10/P7M13 Piston Roll Pin - HKP-01399
    Add to Cart

    HK P7M8, P7M10, P7M13 Roll Pin - Gas Piston

    H&K Heckler & Koch

    $5.95
    Piston Roll Pin   Compatible With: P7M8 P7M10 P7M13
    HKP-01399
    $5.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • New - H&K HK USP Lanyard Loop Insert Pin - HKP-01930
    Add to Cart

    HK USP Lanyard Loop Insert Pin

    H&K Heckler & Koch

    $19.95
    HK USP Lanyard Loop Insert Pin   Compatible With: HK USP 9mm HK USP 40 HK USP 45  
    HKP-01930
    $19.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95
    Subtotal:
  • Out Of Stock
    New - B&T Extractor Kit for B&T Pistol Caliber Firearms - HKP-21741

    B&T Pistol Extractor Kit

    B&T Brugger & Thomet

    $55.00
    B&T Extractor Kit for B&T Pistol Caliber Firearms Factory B&T extractor kit for B&T pistol caliber firearms. This kit includes ciritical spare extractor components to keep your B&T running at the range or in the field...
    HKP-21741
    $55.00
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $55.00
    Subtotal:
  • New - H&K HK P7 PSP/P7M8 Magazine Locking Plate - HKP-01313 HK P7 PSP, P7M8 Magazine Locking Plate
    Add to Cart

    HK P7 PSP, P7M8 Magazine Locking Plate

    H&K Heckler & Koch

    $12.95
    HK P7 PSP/P7M8 Magazine Locking Plate Compatible With: PSPP7M8
    HKP-01313
    $12.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • New - H&K HK P30/P2000 Release Latch & Decocker - HKP-01773
    Add to Cart

    HK P30, P2000 Release Latch & Decocker

    H&K Heckler & Koch

    $32.95
    HK P30 & P2000 Release Latch & Decocker Compatible With: HK P30 HK P30L HK P2000 HK P2000SK
    HKP-01773
    $32.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $32.95
    Subtotal:
  • New - USA HK UMP Left Hammer Spring - HKP-20840 HK UMP Hammer Spring - Left
    Add to Cart

    HK UMP Hammer Spring - Left

    USA

    $9.95
    USA HK UMP Left Hammer Spring New U.S hammer spring- left side A high wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With:  HK UMP models 45, .40 & 9mm USC .45 and other...
    HKP-20840
    $9.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • New - H&K HK 45/P30 Lockout Key - HKP-02504
    Add to Cart

    HK45, P30 Lockout Key

    H&K Heckler & Koch

    $12.95
    Safety Lockout Key HK45, HK45C, P30, & P30L New HK German lockout key for the factory HK mag release lockout. Compatible With: HK 45, HK45 Tactical HK 45C, HK45C Tactical All HK P30 All HK P30L All HK P30
    HKP-02504
    $12.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • New - HKP HK MP5 (.40 S&W) Locking Roller -2 - HKP-17563
    Add to Cart

    HK MP5 Locking Roller -2 - .40 S&W

    HKP HK Parts

    $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...
    HKP-17563
    $11.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.95
    Subtotal:
  • New - HKP HK MP5 (.40 S&W) Locking Roller +6 - HKP-17565
    Add to Cart

    HK MP5 Locking Roller +6 - .40 S&W

    HKP HK Parts

    $11.95
    HK 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...
    HKP-17565
    $11.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11.95
    Subtotal:
  • New - HKP Front Sight Tower Ambi Sling Attachment Weldment - HKP-17881 HKP Front Sight Tower Ambi Sling Attachment Weldment
    Add to Cart

    HKP Front Sight Tower Ambi Sling Attachment Weldment

    HKP HK Parts

    $14.95
    HKP Front Sight Tower Ambi Sling Attachment Weldment Ambi sling loop that is welled and installed on all MP5F model front sight tower. A great upgrade for that custom build or for those that want to have the ability to have an ambidextrous sling loop at...
    HKP-17881
    $14.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $14.95
    Subtotal:
  • Total: items /

Adding your products to cart