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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On Sale
HK Spare Buffer For Folding Stocks & End Caps
HKP HK Parts
Now: $7.96Was: $9.95HKP Spare Buffer For Folding Stocks & End Caps New US manufactured flat style "H"buffer to replace the factory HK buffer on MP5K folding stocks and end caps. As well as a spare or replacement buffer for the MP5 & MP5K folding B&T stocks. Made...Now: $7.96Was: $9.95 -
On Sale
HKP +4 HK 45C, USPC .45 ACP Magazine Extension
HKP HK Parts
Now: $39.96Was: $54.95HKP +4 HK 45C, USPC .45 ACP Magazine Extension HK Parts magazine extension +4 adds 4 additional rounds to the HK45C, 8 round magazine. Each unit can then be fully assembled into a 12 round HK45C magazine. Ideal for competitive shooters, concealed carry,...Now: $39.96Was: $54.95 -
On Sale
HK MP5 Extractor Spring - 9mm / .40 S&W
Now: $8.96Was: $9.95HK MP5 40/10 & .357 - Extractor Spring The extractor spring is the most common wear item on an MP5 and a must-have spare and replacement part. HK Germany no longer makes the MP5 40/10 extractor spring, and they are no longer available. Our offering...Now: $8.96Was: $9.95 -
On Sale
HK MP5 A3 Retractable Stock Buffer
HKP HK Parts
Now: $5.39Was: $6.74MP5 A3 Retractable Stock "H" Buffer For All HK A3 Retractable Stocks The A3 stock buffer is a high wear and common replacement items that does need to be replaced when they become torn, cracked, brittle, discolored & worn. These units are made from...Now: $5.39Was: $6.74 -
On Sale
HK Semi Auto Shelf for Receiver - Billeted
HKP HK Parts
Now: $14.36Was: $17.95HKP Semi Auto Shelf for Receiver - Billeted HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to the rearward portion of the magwell to allow the use of...Now: $14.36Was: $17.95 -
On Sale
M-LOK Vertical Foregrip - MVG
Magpul
Now: $20.66Was: $22.95M-LOK MVG® VERTICAL GRIP M-LOK SLOT SYSTEM The M-LOK MVG is a light weight, inexpensive vertical foregrip that attaches directly to M-LOK compatible hand guards and forends with no additional Picatinny rails required. Made from the same high quality...Now: $20.66Was: $22.95 -
Out Of StockOn Sale
HK USP Full Size Ambidextrous Control Lever Set
H&K Heckler & Koch
Now: $106.16Was: $117.95Ambidextrous Left & Right Side Control Lever Set. Genuine Heckler & Koch ambidextrous control lever kit includes left and right side control lever as well as the roll pin - everything that's needed for installation on all USP or USPC...Now: $106.16Was: $117.95 -
On Sale
HK Roller +9 - New - 8.09mm
HKP HK Parts
Now: $7.19Was: $8.99Roller +9 - New - 8.09mm HK Parts Standard (8.09 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...Now: $7.19Was: $8.99 -
On Sale
JMac 14F, 15F, 24F, 26F Muzzle Device Shims - FaceMount
JMAC Customs
Now: $8.96Was: $9.95JMac Customs Metric Face Mount Shims Custom shims for JMac muzzle devices. This kit includes varying thickness shims to "time" your muzzle device to your desired orientation. These shims are specifically made for JMac 14F, 15F, 24F and 26F muzzle devices...Now: $8.96Was: $9.95 -
On Sale
HK416, MR556 Ejection Port Cover - FDE
H&K Heckler & Koch
Now: $53.96Was: $59.95HK German HK 416, MR556 Ejection Port Cover In FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the build with the finest ejection port...Now: $53.96Was: $59.95 -
On Sale
HK P30 Series Magazine Release - Enhanced
HKP HK Parts
Now: $39.96Was: $49.95Enhanced Magazine Release - Alloy - HK P30, P30SK, P30L New HK Parts Enhanced and Over-sized Magazine Release. The oversized magazine Release increases the overall surface area and makes it possible to release the magazine without changing the...Now: $39.96Was: $49.95 -
On Sale
HK Trip Lever- Friction - Used - Surplus
H&K Heckler & Koch
Now: $3.37Was: $3.74H&K Trip Lever- Friction - Used - Surplus HK German trip lever for HK F/A or registered sear trigger packs in used surplus condition. This is the older friction style trigger pack found on older HK trigger packs and all HK registered sear packs.Now: $3.37Was: $3.74