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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$5.95 -
HK33, HK53, HK93, HK91, G3 Internal Buffer With Break Springs
H&K Heckler & Koch
$17.95HK German G3, 91, PTR & HK 33, 93 Internal Buffer Brake Spring New HK German Brake Springs for the standard buffer found on the HK G3, 91, PTR & HK93, 33, 53 rear stocks. Compatible With: All standard A2 fixed stock buffers$17.95 -
HK MP5, SP5 A1 Sling Swivel End Cap
H&K Heckler & Koch
$139.99HK German MP5 & SP5 A1 End Cap With Sling Swivel The MP5 end cap allows the user to add a single-point sling. Perfect for a pistol build or a lower profile setup. Made by HK Germany. Compatible With: HK MP5 HK SP5 HK94 MP5 clones and other...$139.99 -
HK417, MR762A4 Bolt Catch, Release - Ambi
H&K Heckler & Koch
$53.95Heckler and Koch MR762 A4 Bolt Catch/Release - Ambi Factory ambidextrous bolt catch lever for the MR762 A4. The A4 variant of the MR762 introduced ambi controls for the bolt catch/release not previously available on the A1 variant...$53.95 -
HK416, MR556 Charging Handle Roll Pin
$7.95HK 416, MR556 Roll Pin for Charging Handle - HKP This is the shorter one that is used on the inside of the charging handle. There are two of these pins used per charging handle.$7.95 -
HK MP5, HK94, SP5 Magazine Spring - 10 Round
H&K Heckler & Koch
$6.9510 Round Magazine Spring - HK MP5, 94, SP5 A must-have repair and replacement part great for spares. Compatible With: All factory spec steel 10 round MP5, 94 style curved magazines$6.95 -
HK USP Hammer, Hammer Strut Roll Pin
H&K Heckler & Koch
$5.95HK USP Hammer, Hammer Strut Roll Pin This pin installs in the hammer and makes contact with the hammer strut.$5.95 -
Out Of Stock
HK416, MR556 Ejector Spring
H&K Heckler & Koch
$39.99HK 416 & MR556 Ejector Spring Compatible With: MR556 HK 416$39.99 -
HK G36, SL8 Extractor Axle
H&K Heckler & Koch
$9.95HK G36 & SL8 Extractor Axle This part can become heavily worn and is prone to breakage. Compatible With: HK G36 models HK SL8 models$9.95 -
On Sale
HK33, HK53, HK93 Push Pin Spring
MKE
Now: $2.19Was: $3.95MKE HK33, HK53, HK33 Push Pin Spring A must have replacement spring to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn out springs that come loose while in action...Now: $2.19Was: $3.95 -
HK G36, SL8 Barrel Retaining Nut - 5.56 / .223
H&K Heckler & Koch
$29.95HK G36 & SL8 Barrel Retaining Nut - German HK Compatible With: SL8 (all models and variants) G36E G36K G36C All other G36 Variants$29.95 -
Out Of Stock
HK MP5 40/10 +2 Roller
H&K Heckler & Koch
$19.99MP5 40,10 +2 Roller New HK German MP5 40/10 +2 roller. Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair)...$19.99