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 CC9 Front Sight - Blacked Out
H&K Heckler & Koch
$23.95Heckler 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: CC9HKP-22425$23.95 -
HK MR762 A4 Upper Receiver Kit - 16"
H&K Heckler & Koch
$2,449.95HK 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 -
On Sale
HK MP5, AP5 Front Sight Tower - UNFINISHED - BLEMISHED
MKE
Now: $22.46Was: $49.95MKE 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-BNow: $22.46Was: $49.95 -
HK MP5, MP5K, HK416, MR556 Flash Hider - 1/2x28 - Taper Mount
JMAC Customs
$116.951/2x28 - 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 -
HK417, MR762 Handguard - 15" - Tropentarn
H&K Heckler & Koch
$488.95Heckler 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 -
HK416, MR556 Handguard - 12.5" - M-LOK - Tropentarn
H&K Heckler & Koch
$488.95H&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 416HKP-99327$488.95 -
Out Of StockOn Sale
HK33K, HK53 Locking Piece #3 - 58 Degree - New Old Stock
H&K Heckler & Koch
Now: $1,449.95Was: $1,949.95Heckler 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-99315Now: $1,449.95Was: $1,949.95 -
HK MP5 Parts Kit - A3 Buttstock - 4 Position 3 Round Burst - .40 S&W, 10mm
H&K Heckler & Koch
$4,799.95H&K Heckler and Koch A3 4 Position 3 Round Burst Parts Kit for HK MP5 40,10 Genuine German HK MP5 .40 parts kits are becoming increasingly rare, and this setup is a prized find. Featuring the sought-after bolt hold open feature, the 4-position,...HKP-22242$4,799.95 -
Out Of Stock
B&T GHM9, GHM45, KH9 Stock Conversion Kit
B&T Brugger & Thomet
$165.00B&T GHM9 Stock Conversion Kit Converts the telescopic brace into a telescopic stock or can be used as a replacement for a damaged unit. Compatible with B&T telescopic braces BT-20517 and BT-20527. Includes: Buttplate Extension...HKP-22229$165.00 -
On Sale
Century Arms AP5 Flash Hider - Incomplete
MKE
Now: $37.46Was: $79.95MKE AP5 Incomplete Flash Hider The MKE AP5 and MKE AP5-P OEM flash hider is an essential spare for anyone needing to replace a broken or damaged flash hider body. With a straightforward process, you can easily remove the locking latch, spring, and pins...HKP-22223Now: $37.46Was: $79.95 -
On Sale
HK MP5 Tactical Weapon Light - USED
B&T Brugger & Thomet
Now: $129.95Was: $299.95B&T HK MP5 Tactical Handguard Weapon Light - USED ONLY 3 UNITS LEFT - VARYING CONDITION SHOWN - SOLD INDIVIDUALLY DOES NOT INCLUDE BATTERIES LED weapon light compatible with B&T TL99 MP5/SP5 handguards. Specifications: High...HKP-99270Now: $129.95Was: $299.95 -
On Sale
Optic Rail - 16 Slot - Peep Sight - USED
FN
Now: $28.95Was: $99.95FN Optic Rail w/ Peep Sight - 16 Slot - USED ONLY 1 UNIT LEFT - AS PICTURED NO MOUNTING SCREWS. Used 16-slot optic rail for FN firearms with a built in peep sight. THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS...HKP-99262Now: $28.95Was: $99.95