HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HK91, G3 Sling Button
H&K Heckler & Koch
$9.95Heckler and Koch Sling Button Stud for HK91 and G3 Heckler and Koch sling button stud for HK91 and G3 rifles. A factory-style replacement part for restoring or maintaining the sling attachment point on compatible HK pattern rifles. Compatible...HKP-99475$9.95 -
HK MR556 A4 Handguard - RAL8000
H&K Heckler & Koch
$279.95Heckler and Koch MR556 A4 Handguard - RAL8000 This 10" factory H&K MR556 A4 handguard offers a lightweight, free-floating design that enhances accuracy and provides rock-solid mounting for accessories. Made from high-strength aluminum, it features a...HKP-99491$279.95 -
On Sale
HK MP5 A3 Stock Fork Section with Buttpads Bundle - GUNSMITH SPECIAL
Other
Now: $99.95Was: $149.95HK MP5 A3 Stock Fork Section Bundle with Buttpads - GUNSMITH SPECIAL Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. The Condition will vary from part-to-part vs. the pictured unit...HKP-99489Now: $99.95Was: $149.95 -
On Sale
HK91, G3, HK93, HK53 Extractor Spring - Used
H&K Heckler & Koch
Now: $3.74Was: $6.74Heckler and Koch German Used Extractor Spring for HK91, G3, HK93, HK53 Factory HK German used extractor spring for HK91, G3, HK93, and HK53 pattern firearms. The extractor spring is one of the most frequently replaced parts on HK firearms and is a...HKP-00188-USEDNow: $3.74Was: $6.74 -
On Sale
HK91, G3 Magazine Floorplate - 7.62x51 / .308
H&K Heckler & Koch
Now: $19.95Was: $29.95Magazine Floorplate for HK91, G3 - 7.62x51 / .308 Magazine floorplate for HK91 and G3 7.62x51 / .308 magazines. A factory replacement part for restoring or maintaining compatible magazine assemblies. Compatible With: HK91, G3 THIS...HKP-99477Now: $19.95Was: $29.95 -
On Sale
HK MP5K Trigger Group - 9mm - Navy Style with AR Grip and Match Trigger - FDE - BLEMISHED
Magpul
Now: $519.95Was: $649.95Magpul HK MP5K AR 9mm Navy Style Match Trigger Group - FDE Our improved HK-AR Navy ambidextrous lower housing is now paired with our match trigger pack and a Magpul MOE grip to make this complete MP5K-AR style match trigger group. This trigger group is a...HKP-99474Now: $519.95Was: $649.95 -
On Sale
HK MP5 Trigger Group - AR Match - FDE - BLEMISHED
Magpul
Now: $519.95Was: $664.95Magpul AR Match Trigger Group for HK MP5 - FDE Our new and improved HK-AR Navy ambidextrous lower housing is now paired with our match trigger pack and a Magpul MOE grip to make this complete MP5-AR style match trigger group. This trigger group is a...HKP-99473Now: $519.95Was: $664.95 -
On Sale
HK SEF Trigger Housing - Semi-Auto
H&K Heckler & Koch
Now: $129.95Was: $169.95Heckler and Koch Semi-Auto SEF Trigger Housing Heckler and Koch semi-auto SEF trigger housing for compatible HK firearms. A factory-style housing option for builds, replacements, or repair projects requiring a semi-auto SEF configuration. THIS CLOSEOUT...HKP-99472Now: $129.95Was: $169.95 -
On Sale
HK UMP, USC Picatinny Rail Set - 4 Piece - Used
H&K Heckler & Koch
Now: $199.95Was: $269.95Heckler and Koch 4 Piece Picatinny Rail Set for HK UMP and USC - Used Used HK factory Picatinny rail set for the HK UMP and USC. This 4 piece set includes one extended top rail for optics and three smaller rails for side and bottom mounting...HKP-99471Now: $199.95Was: $269.95 -
HK SL6 Magazine - 4 Round - Used - RARE
H&K Heckler & Koch
$249.95Heckler and Koch 4 Round Magazine for HK SL6 - Used - Rare Rare 4 round magazine for the HK SL6 chambered in .223. A hard to find factory magazine for collectors, restorations, or completing an original SL6 setup. Compatible With: SL6 .223 THIS...HKP-99466$249.95 -
On Sale
HK MP5 Handguard - Bottom Rail
Command Arms Accessories
Now: $142.95Was: $189.95Command Arms HK MP5 Handguard - Bottom Rail Command arms bottom rail handguard for the MP5. Designed to replace the factory handguard with an aluminum Picatinny system, this setup provides a stable mounting platform for foregrips and other rail-mounted...HKP-99462Now: $142.95Was: $189.95 -
On Sale
HK MP5, MP5K, MKE AP5, AP5-P Case Deflector - 9mm Receivers - Incomplete
MKE
Now: $14.95Was: $24.95MKE AP5, AP5-P, HK MP5, MP5K Case Deflector for 9mm Receivers - Incomplete This incomplete steel case deflector is manufactured by MKE for AP5 firearms and fits MP5-pattern 9mm receivers. It installs on the ejection-port flat of the receiver and is...HKP-99461Now: $14.95Was: $24.95