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
  • H&K UMP/USC (.45 ACP) Extractor H&K UMP/USC (.45 ACP) Extractor

    H&K UMP/USC (.45 ACP) Extractor

    H&K Heckler & Koch

    $49.95
    New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once it is removed from the...
    HKP-00265
    $49.95
    Qty in Cart: 0
    Quantity:
    Price:
    $49.95
    Subtotal:
  • H&K HK MR556/MR762/416/417 Disconnector Spring

    H&K HK MR556/MR762/416/417 Disconnector Spring

    H&K Heckler & Koch

    $5.95
    HK416, HK417, MR556, & MR762 Disconnector Spring- Short This is the shorter spring of the 2 found in the trigger assembly. Compatible With: MR556 MR762 HK 416 HK 417
    HKP-02675
    $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • H&K HK MR762, 417, G28 Ejection Cover Axle Spring

    H&K HK MR762, 417, G28 Ejection Cover Axle Spring

    H&K Heckler & Koch

    $9.95
    HK417, MR762 Ejection Cover Axle Spring New Hk German manufacture for the MR762 & HK 417 firearm. The spring is used on the axle and ejection port cover door to allow it to be closed and spring open. Compatible With: MR762 HK 417 G28
    HKP-16753
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • H&K HK USP/USPC/45/45C Sear Roll Pin

    H&K HK USP/USPC/45/45C Sear Roll Pin

    H&K Heckler & Koch

    $6.95
    Sear Roll Pin HK USP 9mm .40 S&W .45 ACP HK USP Compact 9mm .40 S&W .357 SIG .45 ACP HK45 HK45 Compact
    HKP-01815
    $6.95
    Qty in Cart: 0
    Quantity:
    Price:
    $6.95
    Subtotal:
  • HKP HK UMP, USC Lower Bolt Catch HKP HK UMP, USC Lower Bolt Catch

    HKP HK UMP, USC Lower Bolt Catch

    HKP HK Parts

    $22.95
    HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USC
    HKP-19565
    $22.95
    Qty in Cart: 0
    Quantity:
    Price:
    $22.95
    Subtotal:
  • Compression Rod - 90's Series - Titanium Compression Rod - 90's Series - Titanium

    Compression Rod - 90's Series - Titanium

    HKP HK Parts

    $29.95
    Compression Rod - 90's Series - Titanium The H&K burst trigger pack compression rods and compression rod springs are the foremost wear/breakage components in burst packs. This replacement compression rod is constructed from titanium, offering...
    HKP-20887
    $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • H&K G36/SL8 (5.56/.223) Factory Recoil Buffer

    H&K G36/SL8 (5.56/.223) Factory Recoil Buffer

    H&K Heckler & Koch

    $20.95
    HK G36 Or SL8 Factory Recoil Buffer   A critical spare part as these buffers deteriorate with usage and time.    
    HKP-00290
    $20.95
    Qty in Cart: 0
    Quantity:
    Price:
    $20.95
    Subtotal:
  • Out Of Stock
    H&K HK Mark 23 Firing Pin Block Spring

    H&K HK Mark 23 Firing Pin Block Spring

    H&K Heckler & Koch

    $9.95
    HK Mark 23 Firing Pin Block Spring Compatible With: Mark 23 Socom .45
    HKP-01599
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • H&K HK VP9/VP9SK, VP40 Trigger Safety Catch Elbow Spring

    H&K HK VP9/VP9SK, VP40 Trigger Safety Catch Elbow Spring

    H&K Heckler & Koch

    $6.95
    H&K HK VP9/VP9SK, VP40 Trigger Safety Catch Elbow Spring Elbow spring for trigger safety catch VP9, VP9SK & VP40.
    HKP-16772
    $6.95
    Qty in Cart: 0
    Quantity:
    Price:
    $6.95
    Subtotal:
  • H&K MP5F & MP5 40,10 Cocking Support Handle Spring

    H&K MP5F & MP5 40,10 Cocking Support Handle Spring

    H&K Heckler & Koch

    $9.95
    H&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-00426
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • HK G36, HK SL8 Bolt Catch USF HK G36, HK SL8 Bolt Catch USF

    HK G36, HK SL8 Bolt Catch USF

    USA

    $14.95
    HK G36 & SL8 Bolt Catch On AR-15 systems this would be similar to a cam pin. Compatible With: G36, G36K, G36C Sl8 variants
    HKP-19122
    $14.95
    Qty in Cart: 0
    Quantity:
    Price:
    $14.95
    Subtotal:
  • HKP HK MP5 40 Locking Roller -4

    HKP HK MP5 40 Locking Roller -4

    HKP HK Parts

    $11.95
    HK 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-17561
    $11.95
    Qty in Cart: 0
    Quantity:
    Price:
    $11.95
    Subtotal:
  • POF MP5, HK94, MP5K, SP89 & SP5K Firing Pin POF MP5, HK94, MP5K, SP89 & SP5K Firing Pin

    POF MP5, HK94, MP5K, SP89 & SP5K Firing Pin

    POF

    $24.95
    HK Contract MP5, HK94 Firing Pin - POF Made from HK prints and tooling in the POF factory. The USA and German HK offering are a better offering with tighter tolerances and better materials. Compatible With: MP5 HK94 MP5K SP89 SP5K All 9mm, 40/10mm...
    HKP-18264
    $24.95
    Qty in Cart: 0
    Quantity:
    Price:
    $24.95
    Subtotal:
  • H&K HK P Series LEM Hammer H&K HK P Series LEM Hammer

    H&K HK P Series LEM Hammer

    H&K Heckler & Koch

    $69.95
    H&K HK P Series LEM Hammer Factory HK German hammer. Compatible With: HK P30 P30L P30SK HK P2000 P2000SK
    HKP-15436
    $69.95
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • H&K HK USP Recoil Rod Secondary Buffer Spring H&K HK USP Recoil Rod Secondary Buffer Spring

    H&K HK USP Recoil Rod Secondary Buffer Spring

    H&K Heckler & Koch

    $9.95
    HK USP Recoil Rod Secondary Buffer Spring This is the spring found under the larger primary recoil spring on the recoil assembly Compatible With: HK USP 45 HK USP 40 HK USP 9mm All HK USP Tactical models HK Elite, Expert
    HKP-02470
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • H&K HK VP9, HK VP40 Catch Spring for Dissassembly Lever

    H&K HK VP9, HK VP40 Catch Spring for Dissassembly Lever

    H&K Heckler & Koch

    $5.95
    Catch Spring For Dissassembly Lever HK VP9, HK VP40 Compatible With: HK VP9 HK VP40
    HKP-16786
    $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • HK G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring HK G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring

    HK G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring

    USA

    $5.95
    HK G36 & MP7 Firing Pin Bolt O-ring. This is also the O-ring for the retaining pin for the MP7- US. Compatible With: HK G36 HK MP7
    HKP-18373
    $5.95
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • H&K HK 45/45C V2 Right Side LH Lever - Black H&K HK 45/45C V2 Right Side LH Lever - Black

    H&K HK 45/45C V2 Right Side LH Lever - Black

    H&K Heckler & Koch

    $54.95
    HK 45 & 45C V2 Right Side LH Lever - Black This is the control lever for left-hand shooters. This would be the lever on the right side of the frame for left-hand shooters. The V2 left lever will allow for both the safety...
    HKP-02416
    $54.95
    Qty in Cart: 0
    Quantity:
    Price:
    $54.95
    Subtotal:
  • H&K HK MR556/416 Forward Assist Assembly H&K HK MR556/416 Forward Assist Assembly

    H&K HK MR556/416 Forward Assist Assembly

    H&K Heckler & Koch

    $68.95
    HK 416, MR556 Forward Assist Assembly H&K Germany factory MR556 & HK416 forward assist assembly complete. Compatible With: HK 416 HK MR556
    HKP-16528
    $68.95
    Qty in Cart: 0
    Quantity:
    Price:
    $68.95
    Subtotal:
  • H&K HK USP V2/6/10 LH Control Lever

    H&K HK USP V2/6/10 LH Control Lever

    H&K Heckler & Koch

    $64.95
    New HK German USP Full Size Control Lever For Variants 2, 6, 10 A common item to convert the USP from a right-handed shooter to a left-handed operation. This is the control lever for the right side of the firearm for left-handed shooters. Compatible...
    HKP-01415
    $64.95
    Qty in Cart: 0
    Quantity:
    Price:
    $64.95
    Subtotal:
  • HKP HK21E/23E Rear Sight Base HKP HK21E/23E Rear Sight Base

    HKP HK21E/23E Rear Sight Base

    HKP HK Parts

    $38.95
    HKP HK21E/23E Rear Sight Base 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 With: HK21E HK23E
    HKP-21467
    $38.95
    Qty in Cart: 0
    Quantity:
    Price:
    $38.95
    Subtotal:
  • HKP HK93, HK33 Spare Parts Kit HKP HK93, HK33 Spare Parts Kit

    HKP HK93, HK33 Spare Parts Kit

    H&K Heckler & Koch

    $209.95
    HKP HK93, HK33 Spare Parts Kit Spare parts kits for the most commonly worn parts needed to keep your HK93, HK33 going. This offering also includes a pouch to safely store all your replacement parts and needed tools to have on hand when required. This...
    HKP-20674
    $209.95
    Qty in Cart: 0
    Quantity:
    Price:
    $209.95
    Subtotal:
  • GSG9 HK416, MR556 Firing Pin GSG9 HK416, MR556 Firing Pin

    GSG9 HK416, MR556 Firing Pin

    GSG9

    $34.95
    Firing Pin for HK 416 & MR556 Firearm - USA - GSG9 US made HK 416 & MR556 Made from hardened stainless steel. Compatible With: HK416 HK MR556 HK CR556 HK M27
    HKP-20650
    $34.95
    Qty in Cart: 0
    Quantity:
    Price:
    $34.95
    Subtotal:
  • H&K HK Mark 23 Extractor H&K HK Mark 23 Extractor

    H&K HK Mark 23 Extractor

    H&K Heckler & Koch

    $79.95
    HK German Mark 23 SOCVOM Extractor New HK German manufacture. This item is no longer being made and is a great spare part to have on hand. Compatible With: Mark 23 SOCOM pistols
    HKP-01408
    $79.95
    Qty in Cart: 0
    Quantity:
    Price:
    $79.95
    Subtotal:
  • H&K HK USP Left Side V1/5/9 Decocking Lever H&K HK USP Left Side V1/5/9 Decocking Lever

    H&K HK USP Left Side V1/5/9 Decocking Lever

    H&K Heckler & Koch

    $79.95
    H&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-01169
    $79.95
    Qty in Cart: 0
    Quantity:
    Price:
    $79.95
    Subtotal:
  • H&K HK USP/USPC .45 ACP New Style Extractor H&K HK USP/USPC .45 ACP New Style Extractor

    H&K HK USP/USPC .45 ACP New Style Extractor

    H&K Heckler & Koch

    $59.95
    New Style Extractor New HK German part with red loaded chamber indicator.  Compatible with: USP 45, USP 45 Tactical USP Compact .45, USPC .45 Tactical USP Expert
    HKP-01478
    $59.95
    Qty in Cart: 0
    Quantity:
    Price:
    $59.95
    Subtotal:
  • H&K P30/45 Series Cylindrical Grip Pin

    H&K P30/45 Series Cylindrical Grip Pin

    H&K Heckler & Koch

    $9.95
    H&K P30 & 45 Series Cylindrical Grip Pin  Compatible With: HK 45 HK 45 Compact HK P30 HK P30 V2 HK P30 V3 HK P30L HK P30L V2 HK P30L V3
    HKP-01808
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • H&K G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin H&K G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin

    H&K G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin

    H&K Heckler & Koch

    $9.95
    Retaining Pin For Firing Pin Complete With O-ring Compatible With: HK G36 HK SL8
    HKP-14050
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • H&K HK 45 Recoil Complete Rod w/ Spring

    H&K HK 45 Recoil Complete Rod w/ Spring

    H&K Heckler & Koch

    $89.95
    HK 45 Recoil Complete Rod w/ Spring This is the complete recoil guide assembly for the HK45 pistol. Great item to have on hand for repair or replacement. Compatible With: HK45 HK45 Tactical Please Note: This does not fit the USP .45...
    HKP-01667
    $89.95
    Qty in Cart: 0
    Quantity:
    Price:
    $89.95
    Subtotal:
  • H&K HK Mark 23/SOCOM Firing Pin

    H&K HK Mark 23/SOCOM Firing Pin

    H&K Heckler & Koch

    $49.95
    New HK German Mark 23 Firing Pin A great item to have on hand as these are a common wear item.  Compatbile With: Mark 23
    HKP-01670
    $49.95
    Qty in Cart: 0
    Quantity:
    Price:
    $49.95
    Subtotal:
  • H&K HK P7 Series Slide Removal Button Spring

    H&K HK P7 Series Slide Removal Button Spring

    H&K Heckler & Koch

    $7.95
    HK P7 Series Slide Removal Button Spring   This item is no longer in production. Get it while it's still available. Compatible With: PSP P7M8 P7M10 P7M13
    HKP-01314
    $7.95
    Qty in Cart: 0
    Quantity:
    Price:
    $7.95
    Subtotal:
  • HK UMP/USC (.45 ACP) Extractor HK UMP/USC (.45 ACP) Extractor

    HK UMP/USC (.45 ACP) Extractor

    $39.95
    HK UMP & USC .45 Extractor Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once removed from the carrier, the spring tension is compromised,...
    HKP-02623
    $39.95
    Qty in Cart: 0
    Quantity:
    Price:
    $39.95
    Subtotal:
  • Total: items /

Adding your products to cart