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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HK Universal Hammer Spring
H&K Heckler & Koch
$9.95New HK German Rifle Hammer Spring For All.308/.223 Semi & Full Auto Trigger Packs The 308/556 hammer spring is a popular upgrade to replace the hammer spring in 9mm and clones that have light primer hits. This is the factory-correct 25 lb. weight for...$9.95 -
HK 9mm Thread Protector - 1/2x28
HKP HK Parts
$14.95HKP (9mm) Thread Protector For Barrels - Threaded 1/2x28 A must-have accessory to safeguard the threads on your threaded barrel, this thread protector is the finest available. It is the standard thread protector included with all HKPARTS threaded pistol...$14.95 -
HK SP5K Micro Comp - Knurled - Threaded 1/2x28
HKP HK Parts
$26.95HKP HK SP5/K 9mm Knurled Micro Comp - Threaded 1/2x28 Our SP5 micro comp has the appearance of a standard factory style thread protector but now extended and slotted to provide a micro comp feature. The added slots help mitigate gasses allowing the...$26.95 -
HK G36 Magazine Conversion to AR-15 Magwell
H&K Heckler & Koch
$235.99H&K HK G36 to AR-15 Mag Conversion Magwell - Black Simply swap the magazine well from the G36 to this offering and you can then run AR15/M4 style magazine in your G36 or SL8/G36 conversion. Allows use of all AR15-M4 magazines in the G36 with this...$235.99 -
HK416, MR556 Magazine - 20 Round
H&K Heckler & Koch
$74.95H&K 20 Round HK MR556 & 416 5.56/.223 Magazine New HK416 and MR556 Factory 20 Round Steel Maritime Coated Magazine. Will fit and work in all AR-15/M16 weapons. Perfect for those who need a lower profile magazine or who will be doing prone or...$74.95 -
HK MP5, MP5K, SP89 Handguard
HKP HK Parts
$29.95HK SP89, SP5K, MP5K - Forearm Compatible With: HK MP5K HK SP89 HK SP5K MP5 Reverse Stretch Style Builds Custom MP5K/ SP89 builds Specifications: Made in the USA 922r Compliant Brand: HK Parts *Can be modified to install on MP5K-N builds with 3...$29.95 -
HK Ambidextrous Sling Pin O-Ring
H&K Heckler & Koch
$1.95H&K Ambidextrous Sling Pin O-Ring HK ambidextrous sling pin replacement O-ring for all ambidextrous sling pins. This item is a common wear/breakage part that does need to be replaced from time to time. This is the part that creates the + seal to keep...$1.95 -
HK MP5, HK94, SP89 Magazine Pouch - 3 Straight Mags - 30 Round - Nylon
H&K Heckler & Koch
$37.95German H&K MP5 9mm 30 Round Magazine Pouch - Fits 3 Straight MP5 Mags Used in exc to like new shape German HK magazine pouch for HK MP5 sticks mags. This is the first production MP5 style of magazine pouch. Each mag pouch is made in Germany and...$37.95 -
HK SP5K Bolt Carrier - Full Auto - Spec
RCM
$189.95HK SP5K Specification Full Auto Bolt Carrier - US Made Machined completely from billet ordnance grade steel. The HK SP5K carrier is made to the most updated and latest MP5K F specs that will fit the SP5K. Tungsten filled, heat treated, & factory...$189.95 -
HK SP5K Bench Mat
HKP HK Parts
$13.95HK MP5K, SP5K, SP89 Gunsmithing Bench Mat This isn't your ordinary gun cleaning mat. Show your pride for your HK SP5K firearm while using our high quality neoprene rubber backed and cloth topped gun cleaning mat to protect your gun bench, desk, kitchen...$13.95 -
HK33, HK53, HK93 Cocking Handle - Extended
HKP HK Parts
$69.95HKP HK 93, 53, & 33 (5.56/.223) Extended Cocking Handle Extended cocking handle for the HK93/33/53 family of firearms. Each handle is designed with the looks of the HK21E/HK23E style extended cocking handle. All steel handles with an enhanced...$69.95 -
Out Of Stock
MP5, MP5K, APC Muzzle Brake - Quick Detach - 3-Lug - 9mm
B&T Brugger & Thomet
$140.00B&T HK MP5/MP5K Quick Detach Muzzle Brake - 3-Lug B&T Swiss manufactured QD muzzle brake for HK tr-lug pattern firearms. Specifications: Diameter 31 mm Length 73 mm Steel QPQ Treated Quick Detach Compatible With: HK MP5, MP5K HK SP5,...$140.00