Parts

Parts

At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.

Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • HK MP5, AP5 Cocking Tube Support - Steel HK MP5, AP5 Cocking Tube Support - Steel
    Add to Cart

    HK MP5, AP5 Cocking Tube Support - Steel

    MKE

    $69.95
    MP5 & HK94 All Steel Cocking Tube Support Each cocking tube support comes complete with the detent and spring installed. This part is the perfect upgrade from the cheap metal or plastic support found in clones.  Compatible With: HK MP5, HK94 HK...
    HKP-22505
    $69.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • HK USP, Mark 23 Magazine Follower - .45 ACP HK USP, Mark 23 Magazine Follower - .45 ACP
    Choose Options

    HK USP, Mark 23 Magazine Follower - .45 ACP

    HKP HK Parts

    $5.95
    HKP HK Parts SOCOM Magazine Follower for USP45 and Mark 23 A great U.S.-made spare to have on hand, as this is a wear-and-replacement item.  Compatible With: USP45 10 Round USP45 12 Round USP45 Tactical, Elite, Expert Mark 23 10 Round Mark 23 12...
    HKP-22499-M
    $5.95
    Choose Options
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • On Sale
    HK SL8 Buttstock Cheek Riser Piece - BLEMISHED HK SL8 Buttstock Cheek Riser Piece - BLEMISHED
    Add to Cart

    HK SL8 Buttstock Cheek Riser Piece - BLEMISHED

    H&K Heckler & Koch

    Now: $17.95
    Was: $34.95
    HK SL8 Stock Cheek Riser Piece - BLEMISHED   VARYING CONDITION SHOWN - SOLD INDIVIDUALLY   MISSING SPACER   COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES...
    HKP-01701-B
    Now: $17.95
    Was: $34.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $17.95
    Was: $34.95
    Subtotal:
  • HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm
    Add to Cart

    HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm

    H&K Heckler & Koch

    $12.95
    HK91, G3 19x1.2mm Retaining Ring for A3 Retractable Buttstocks This 19x1.2 retaining ring (circlip-style) is used in the G3 and HK91 A3 retractable buttstock assembly to help retain the locking components in place for proper fit and function. Compatible...
    HKP-22482
    $12.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • HK416, MR556 A4 Hammer Washer HK416, MR556 A4 Hammer Washer
    Add to Cart

    HK416, MR556 A4 Hammer Washer

    H&K Heckler & Koch

    $58.95
    Heckler and Koch Hammer Washer for HK MR556 OEM hammer washer for HK MR556 and HK416 rifles. Factory-spec replacement washer for the hammer assembly, ideal for repairs, rebuilds, or returning rifles to original HK configuration. Compatible...
    HKP-22434
    $58.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $58.95
    Subtotal:
  • HK CC9 blacked out front sight OEM steel angled view Front view of Heckler and Koch HK CC9 blacked out front sight
    Add to Cart

    HK CC9 Front Sight - Blacked Out

    H&K Heckler & Koch

    $23.95
    Heckler and Koch Blacked Out Front Sight for HK CC9 OEM steel front sight for the HK CC9 with a solid black-out face with no dot or insert. Compatible With: CC9
    HKP-22425
    $23.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $23.95
    Subtotal:
  • HK MR762 A4 Upper Receiver Kit - 16" HK MR762 A4 Upper Receiver Kit - 16"
    Add to Cart

    HK MR762 A4 Upper Receiver Kit - 16"

    H&K Heckler & Koch

    $2,449.95
    HK UPPER RECEIVER KIT MR762 A4 - 16" The MR762 A4 upper kit contains a complete upper receiver and barrel assembly. The closed system design significantly reduces malfunctions typically associated with direct-impingement gas systems, as hot carbon...
    HKP-22424
    $2,449.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $2,449.95
    Subtotal:
  • On Sale
    MKE AP5, MP5 Front Sight Tower - UNFINISHED - BLEMISHED MKE HKP-22220-B MKE AP5, MP5 Front Sight Tower - UNFINISHED - BLEMISHED MKE HKP-22220-B
    Add to Cart

    HK MP5, AP5 Front Sight Tower - UNFINISHED - BLEMISHED

    MKE

    Now: $22.46
    Was: $49.95
    MKE AP5, MP5 Front Sight Tower - UNFINISHED - BLEMISHED SOLD INDIVIDUALLY - UNFINISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The front sight tower is a...
    HKP-22220-B
    Now: $22.46
    Was: $49.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $22.46
    Was: $49.95
    Subtotal:
  • HK MP5, MP5K, HK416, MR556 Flash Hider - 1/2x28 - Taper Mount HK MP5, MP5K, HK416, MR556 Flash Hider - 1/2x28 - Taper Mount
    Add to Cart

    HK MP5, MP5K, HK416, MR556 Flash Hider - 1/2x28 - Taper Mount

    JMAC Customs

    $116.95
    1/2x28 - Plan B Taper Mount Flash Hider for MP5, HK416, MR556, APC223  The 360HD is the latest evolution in JMac Custom's Recoil Reduction Device (RRD) family of muzzle brakes, designed to meet the needs of serious shooters and...
    HKP-22408
    $116.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $116.95
    Subtotal:
  • HK417, MR762 Handguard - 15" - Tropentarn HK417, MR762 Handguard - 15" - Tropentarn
    Add to Cart

    HK417, MR762 Handguard - 15" - Tropentarn

    H&K Heckler & Koch

    $488.95
    Heckler and Koch HK MR762 A4 Complete Handguard - Tropentarn - 15" Factory HK handguard with a 12 o’clock Picatinny rail and M-LOK slots at 3, 6, and 9 o’clock for mounting optics and accessories. Includes dual QD sling sockets for...
    HKP-99326
    $488.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $488.95
    Subtotal:
  • HK416, MR556 Handguard - 12.5" - M-LOK - Tropentarn HK416, MR556 Handguard - 12.5" - M-LOK - Tropentarn
    Add to Cart

    HK416, MR556 Handguard - 12.5" - M-LOK - Tropentarn

    H&K Heckler & Koch

    $488.95
    H&K HK MR556/HK 416 12.5" M-LOK Handguard - Tropentarn New HK German manufactured handguard for the HK 416 and MR556 firearm. ONLY 3 AVAILABLE Compatible With: HK MR556 HK 416
    HKP-99327
    $488.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $488.95
    Subtotal:
  • Out Of Stock
    On Sale
    New - H&K HK53 Locking Piece #3 - 58 Degree - New Old Stock - HKP-99315 H&K HK53 Locking Piece #3 - 58 Degree - New Old Stock - USED H&K Heckler & Koch HKP-99315

    HK33K, HK53 Locking Piece #3 - 58 Degree - New Old Stock

    H&K Heckler & Koch

    Now: $1,449.95
    Was: $1,949.95
    Heckler and Koch HK53 Locking Piece #3 - 58 Degree - New Old Stock ONLY 2 UNITS AVAILABLE - AS PICTURED Priced for ONE Locking Piece - Condition Varies by Unit - Sold Individually Rare genuine German HK #3 locking piece. This is the correct factory...
    HKP-99315
    Now: $1,449.95
    Was: $1,949.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $1,449.95
    Was: $1,949.95
    Subtotal:
  • Total: items /

Adding your products to cart