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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Out Of Stock
HK G36, SL8 Optic Mount, Carry Handle - Picatinny Rail - New Style
H&K Heckler & Koch
$274.99HK German HK SL8 & G36 Picatinny Scope With Rail/ Carry Handle This is the perfect mounting solution for optics. Made from the highest quality combat grade aluminum with a hard coat anodized black finish. Compatible With: G36 models SL8...HKP-01878$274.99 -
On Sale
HK UMP, USC Optic Rail - Picatinny
H&K Heckler & Koch
Now: $12.95Was: $19.95HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USCHKP-22541Now: $12.95Was: $19.95 -
On Sale
HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1
MKE
$42.95 - $59.95MKE AP5, HK MP5 Contoured Trigger Housing - 0,1 This contoured trigger housing is manufactured by MKE for MP5 and AP5 pattern firearms. Designed for 9mm platforms, it provides a factory-correct housing option for MP5-style trigger group assemblies...HKP-99361-M$42.95 - $59.95 -
Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S
Frost Defense
$239.95Aimpoint ACRO P-2, C-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint ACRO P2/C2 red dot sights. This patent-pending mount system provides robust glare and impact protection by surrounding the...HKP-22341-M$239.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Handguard Locking Screw - A4 Style
H&K Heckler & Koch
$22.95HK416, MR556, HK417, MR762 - A4 - Handguard Locking Screw Replacement locking screw that secures the A4 handguard to the upper receiver. Compatible With: HK HK416 A4 HK MR556 A4 HK HK417 A4 (2 required per handguard) HK MR762 A4 (2 required...HKP-22304$22.95 -
HK UMP, USC M-LOK Attachment Piece
HKP HK Parts
$29.95HKP HK UMP/USC M-LOK Attachment Piece Upgrade your UMP and USC with the HK Parts M-Lok attachment piece, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails. This exceptional set significantly expands the range of...HKP-22249$29.95 -
Picatinny Sight Mount - RMR, Holosun
HKP HK Parts
$97.95HKP HK MP5/K RMR / Holosun Picatinny Sight Mount The HKP HK MP5/K RMR / Holosun Picatinny sight mount offers a secure, low-profile platform for RMR and Holosun optics. Compatible with any firearm featuring a Picatinny rail. It ensures solid mounting,...HKP-22068$97.95 -
HK MP5K to G3 Stock or Brace Adapter
HKP HK Parts
$113.95HKP HK MP5K to G3 Brace/Stock Adapter The MP5K/G3 adapter enables seamless compatibility between MP5K firearms and G3-style stocks. Designed for a secure and sturdy connection, it's an excellent upgrade for those looking to customize or swap...HKP-21853$113.95 -
HK91, G3 Tactical Handguard - Low Profile
PTR
$109.95PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes the left, right, as well as bottom sides, with the...HKP-21806-M$109.95 -
HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light
Nefarious Arms
$594.95Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or pistol build. Compatible With: HK 416 A1,...HKP-21589$594.95 -
On Sale
HK21, FMP Drum and Drum Hanger - 100 Round
H&K Heckler & Koch
Now: $997.95Was: $1,288.95HK Heckler and Koch HK21 and FMP Drum Hanger with 100 Round Drum Complete your HK21 or FMP21 build with the incredibly rare original H&K drum hanger and 100-round drum. These components have long been discontinued and are essential for...HKP-21509Now: $997.95Was: $1,288.95 -
On Sale
HK416 A5 Bolt Carrier - Complete
H&K Heckler & Koch
Now: $1,945.00Was: $2,349.95German H&K HK 416 A5 Bolt Carrier Complete Get your hands on that critical puzzle piece for your factory-correct 416A5 build. Fully assembled and ready to drop into your uper receiver. Bolt carriers may be marked ".223 Rem" or "5.56 x 45"...HKP-21500Now: $1,945.00Was: $2,349.95