New Arrivals
Shop the latest arrivals at HKP! We have a wide selection of new and innovative products for your HK MP5, HK SP5, HK P30, HK VP9, HK USP, and more. Whether you're looking for performance upgrades, cosmetic enhancements, or simply want to keep your H&K in top condition, we have you covered. Shop our new arrivals today and get the latest gear for your favorite HK firearm.
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H&K MP5 , HK94 Factory A3 Stock - Used
H&K Heckler & Koch
$739.95H&K MP5 & HK94 Factory A3 Stock - Used The original Navy-style German HK MP5 A3 stock is a rare find as it's no longer in production and has been replaced by the MP5 F-style stock. We are offering the sought-after second-generation MP5 A3...HKP-21644$739.95 -
H&K HK MR762/417 Flush Cup QD End Plate - Black
H&K Heckler & Koch
$138.95H&K HK MR762/417 Flush Cup QD End Plate - Black Factory HK flush end cap with dual QD sockets for ambidextrious sling attachment. Compatible With: HK MR762 HK 417HKP-21642$138.95 -
H&K HK G3 Front Sight Ring
H&K Heckler & Koch
$7.95H&K HK G3 Front Sight Ring Factory HK replacement front sight ring. Compatible With: HK G3HKP-21641$7.95 -
AC-Unity HK MP5 Fixed Stock
AC-Unity Magazines and Parts
$69.95AC-Unity HK MP5 Fixed Buttstock - Gen 2 with Removable Butt Pads The AC-Unity HK MP5 fixed buttstock delivers superior performance and comfort. Featuring soft, shock-absorbing rubber recoil pads, it effectively replaces the outdated fixed but-pad,...HKP-21640$69.95 -
AC-Unity HK G3/HK91 Wide Handguard
AC-Unity Magazines and Parts
$78.95AC-Unity HK G3 Wide Handguard G3 length, black, wide handguard with bipod groove. Perfect fit for your HKG3, HK91, or PTR91 that takes standard G3 length handguards. Includes an inner heat shield to protect your hand. The outer design provides a...HKP-21639$78.95 -
AC-Unity HK93 Wide Handguard - Short
AC-Unity Magazines and Parts
$78.95AC-Unity HK93 Wide Handguard - Short AC-Unity wide/short handguard, specifically designed for the HK33, HK93,HK34 and G3K. This handguard is also the perfect fit for PTR rifles utilizing the shorter HK93 length handguards. The perfect option to match up...HKP-21638$78.95 -
AC-Unity HK MP5 Wide Handguard
AC-Unity Magazines and Parts
$19.95AC-Unity HK MP5 Wide Handguard Made by AC-Unity with advanced, German made polymer-resin/granulate that is both lightweight and shock/UV resistant. This state of the art polymer is formulated to withstand temperatures from -30°C to 120°C...HKP-21637$19.95 -
AC-Unity 30 Round HK33 Magazine
AC-Unity Magazines and Parts
$19.95AC-Unity 30 Round HK33 Magazine The AC-Unity G33 magazine is formed from an advanced polymer-resin/granulate that is lightweight and shock resistant. Metal parts are hardened and corrosion resistant. These magazines have a long lifespan, capable of...HKP-21636$19.95 -
AC-Unity HK MP5 Stock w/4 Rubber Pads
AC-Unity Magazines and Parts
$129.95AC-Unity HK MP5 Stock with 4 Rubber QD Butt Pads MP5 side folding stock assembly from AC-Unity. This assembly includes four quick detach butt pads for a custom fit, prefect for any shooter. Multiple sling attachments accomodate a wide range of...HKP-21634$129.95 -
HKP HK21 Drum Hanger & H&K 100rd Drum
HKP HK Parts
$435.95HKP HK21 Drum Hanger with H&K 100 Round Drum Complete your HK21 or FMP21 build with our HKP drum hanger and H&K original 100-round drum. Our HK21 drum hanger is precisley machined from 4140 billet steel, heat-treated to 50 Rockwell, and...HKP-21633$435.95 -
Michaels Machines HK21E/PSG1/MSG90 Extractor
Michaels Machines
$275.95Michaels Machines HK21E/PSG1/MSG90 Extractor An essential replacement component to keep that HK21E running flawlessly. The extractor is a common wear item and no longer in production from HK. The MM extractor is an exact replica of the...HKP-21632$275.95 -
Out Of Stock
RCM HK21 & HK11 Barrel - 14.5"
RCM
$674.95RCM HK21 & HK11 Barrel - 14.5" RCM HK11 barrels are expertly crafted from mil-spec 41V50 CHF blanks and are fully salt bath nitrided, delivering exceptional wear and corrosion resistance. These hybrid barrels feature an E cut barrel face and are...HKP-21631$674.95 -
AC-Unity HK G3 Pistol Grip
AC-Unity Magazines and Parts
$9.95AC-Unity HK G3 Pistol Grip Beautifully designed and textured for a great feel and sure grip. It also goes correct for HK33 or MP5 style weapons using buttstocks mounted with steel backplates. It is made from an advanced polymer-resin/granulate that is...HKP-21629$9.95 -
AC-Unity HK PSG1 Style Sniper Pistol Grip
AC-Unity Magazines and Parts
$39.95AC-Unity HK PSG1 Style Sniper Pistol Grip The new AC Unity Pistol Grip/Sniper Grip is a great upgrade if you want the PSG1 style grip frame for your HK firearm. The grip features an ambidextrous palm shelf for increased stability and weapon control...HKP-21628$39.95 -
HKP HK45 +5 E2 Magazine Extension Kit
HKP HK Parts
$64.95HKP HK45 +5 E2 Magazine Extension Kit Our HK45 E2 design boldly transforms our magazine extension, giving it an aggressive look along with superior functionality. The enhanced features throughout the extension provide not only the striking appearance we...HKP-21627-M$64.95 -
H&K HK21 FMP Complete Build Kit- Matching Numbers
HKP HK Parts
$3,794.97HK21 Complete Build Kit- Matching Numbers HK Parts bring you yet another exhaustive parts kit. Our numbers matching HK21 kit includes everything you need to ressurect an iconic classic and hit the range for some belt-fed action. Each kit is...HKP-21626$3,794.97 -
Aimpoint ACRO P-2 Red Dot Reflex Sight - 3.5MOA
HKP HK Parts
$599.00Aimpoint ACRO P-2 Red Dot Reflex Sight - 3.5MOA Compact and boasting high clarity, the ACRO is a perfect compliment to any SMG platform. Specifications: 3.5 MOA dot size 50,000 hours (over 5 years) of constant operation 4 night vision compatible...HKP-21625-M$599.00 -
Outer Impact HK USP M.R.A Red Dot Adapter
Outer Impact
$59.95Outer Impact HK USP M.R.A Red Dot Adapter The Outer Impact USP red dot adapter opens up a variety of sight options for the USP platform. Precision-machined from 7075 aircraft aluminum. Compatible With: HK USP Compatible Red Dot Sights (Mounting Screws...HKP-21624$59.95 -
H&K HK 416/MR556 Cleaning Kit with Green Pouch
H&K Heckler & Koch
$64.95H&K HK 416/MR556 Cleaning Kit with Green Pouch This is a genuine HK factory cleaning kit. Compatible With: HK 416 HK MR556 Includes: Nylon storage bag, olive green Nylon brush Cleaning rod, 6 parts Barrel brush Chamber brush Oil brush Oil bottle,...HKP-21623$64.95 -
H&K HK 416 A5 & 417 Universal Tool
H&K Heckler & Koch
$114.95H&K HK 416/417 A5 Universal Tool Genuine HK multi-tool for the 416 A5 and 417. Perfect tool for bench or field use. Conveniently fits inside the 416 combat grip. Compatible With: HK 416 A5 HK 417HKP-21621$114.95 -
Streamlight TLR-9 Weapon Light - 1,000 Lumens
Streamlight
MSRP: $269.66$144.95Streamlight TLR-9 Weapon Light - 1,000 Lumens Maximize your weapons platform with interchangeable rear paddle switches that allow you to customize your TLR-9 to your shooting style. Features: 1,000 lumens; 200m beam; runs 1.5 hours Custom optic...HKP-21620MSRP: $269.66$144.95 -
Nefarious Arms HK 416/MR556 11" A3 Barrel
Nefarious Arms
$694.95Nefarious Arms HK 416/MR556 11" 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, A3, not...HKP-21619$694.95 -
XS Sight Systems HK VP9OR R3D 2.0 Rear Sight
XS Sight Systems
$59.95XS Sight Systems HK VP9OR R3D 2.0 Rear Sight Their second-generation R3D night sights are engineered to give you a brighter stronger set of sights. Easily install their sights with a set that requires 50% less force for installation. R3D sights are built...HKP-21618$59.95 -
HKP Ambi ESSL Housing Franklin Armory Binary Selector Set
HKP HK Parts
$89.95HKP Ambi ESSL Housing Franklin Armory Binary Selector Set - Levers Only HK Parts extended safety selector Selector Lever Set, expertly modeled after the HK Ambi Style Selector Lever. This premium product is designed to integrate seamlessly with the...HKP-21616-M$89.95 -
HKP HK MP5 40/10 Dual Magazine Clamp
HKP HK Parts
$49.95HKP HK MP5 40/10 Dual Magazine Clamp The HK Parts MP5 40/10 dual magazine clamp is expertly crafted to fit all 40/10 MP5 polymer magazines. Constructed from durable aluminum and finished with a type 3 hard anodize for enhanced protection and a premium...HKP-21614-M$49.95 -
H&K MP5K 9mm Complete Bolt Group - Suppressed
H&K Heckler & Koch
$2,974.00H&K MP5K 9mm Complete Bolt Group - Suppressed Introducing an incredible opportunity: a fully assembled Factory German F/A MP5K bolt group, showcasing the highly coveted 80 degree #28 German locking piece. This is the definitive drop-in...HKP-21613$2,974.00 -
Zenith 30 Round HK MP5 Magazine - LEO Marked
Zenith
$52.95Zenith 30 Round HK MP5 Magazine - - LEO Marked Replica LEO laser markings that closely resemble those found on factory magazines. These markings are expertly lasered onto Zenith magazines, successfully emulating the sought-after LEO markings of authentic...HKP-21612$52.95 -
KCI 30 Round HK MP5 Magazine - LEO Marked
KCI
$52.95KCI 30 Round HK MP5 Magazine - LEO Marked Replica LEO laser markings that closely resemble those found on factory magazines. These markings are expertly lasered onto KCI MP5 magazines, successfully emulating the sought-after LEO markings of authentic...HKP-21611$52.95 -
On Sale
MKE HK MP5 Retractable Buttstock - Cerakoted
MKE
Now: $299.95Was: $379.95MKE HK MP5 / AP5 Retractable Buttstock Transform your MP5-AP5 Clone with the essential upgrade that defines its iconic look. The A3 collapsible design delivers a customizable length of pull for unparalleled comfort and control. With a straight forward...HKP-21610-MNow: $299.95Was: $379.95 -
RCM HK21 & HK11 Trunnion
RCM
$274.95RCM HK21 Trunnion When RCM set out to make a replacement trunnion for the venerable HK21, they started the process by putting a factory unit through rigorous destructive metal testing. The end-product: a US-made trunnion blending the proper...HKP-21609$274.95 -
On Sale
HKP HK33 Dual Magazine Clamp
HKP HK Parts
Now: $34.95Was: $49.95HKP HK33 Dual Magazine Clamp Securely hold two HK33 magazines together for fast mag swaps. Precision-machined from billet aluminum and cerakoted in the popular red or classic black. Our dual mag clamp is a must for those quick mag changes. Compatible...HKP-21608-MNow: $34.95Was: $49.95 -
HKP HK 416 .22LR Dual Magazine Clamp
HKP HK Parts
$49.95HKP HK 416 .22LR Dual Magazine Clamp Securely hold two HK 416 .22LR magazines together for fast mag swaps. Precision-machined from billet aluminum. Our dual mag clamp is a must for those quick mag changes. Compatible With: HK 416 .22LRHKP-21607-M$49.95 -
UTG HK MP5/MP5K Claw Mount - Extended Picatinny
UTG
$69.95UTG HK MP5/MP5K Claw Mount - Extended Picatinny UTG Pro Claw Mount for MP5 and MP5K pattern firearms featuring UTG's patented receiver locking interface. Each U.S. made mount features an extended Picatinny rail, lightweight matte black...HKP-21606$69.95 -
H&K HK 940 .30-06 Rifle Barrel
H&K Heckler & Koch
$948.95H&K HK 940 .30-06 Rifle Barrel We understand how challenging it can be to find rare and hard-to-find components for your firearms, which is why we are pleased to present an exceptional opportunity to acquire a replacement barrel for the HK940 in ...HKP-21605$948.95 -
HKP HK MR556/416 Extractor Spring Buffer
HKP HK Parts
$5.39HKP HK MR556/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 & HK416 FirearmsHKP-21604$5.39 -
HKP HK 9mm Enhanced Thread Protector - 13.5x1
HKP HK Parts
$19.95HKP HK 9mm Enhanced Thread Protector - 13.5x1 This enhanced thread protector is crafted from stainless steel and designed for 13.5x1 threaded barrels. Its unique design not only fits over and protects the crown of your barrel but also...HKP-21603$19.95 -
H&K HK45/HK45C Meprolight Tritium Night Sight - Green
H&K Heckler & Koch
$97.95H&K HK45/HK45C Meprolight Tritium Night Sight - Green New old stock HK/Meprolight 6.3 sights. Comes in factory HK packaging. Only a handful available. Compatible With: HK45 HK45CHKP-21602$97.95 -
HKP HK MP5 Raised Picatinny Rail
HKP HK Parts
$134.95HKP HK MP5 Raised Picatinny Rail The HK Parts MP5 Raised Picatinny Rail offers the best of both worlds featuring an unimpeded view of the factory iron sights and an elevated mount for your favorite optic. Cowitness? Lower third? ...HKP-21601$134.95 -
On Sale
HKP HK MP7 Dual Magazine Clamp
HKP HK Parts
Now: $34.95Was: $49.95HKP HK MP7 Dual Magazine Clamp Our MP7 dual mag clamp was designed for quick mag swaps at the range or in the real world. The clamp works with any capacity MP7 magazine. Compatible With: HK MP7HKP-21597-MNow: $34.95Was: $49.95 -
On Sale
B&T Unigrip QD with Bipod - Aluminum
B&T Brugger & Thomet
Now: $199.95Was: $224.99B&T Unigrip QD with Bipod - Aluminum This B&T foregrip features a retractable bipod for superior weapon stability in both the standing and prone positions. Specifications: Condition: Factory new Material: Aluminum Heat deflection...HKP-21596-MNow: $199.95Was: $224.99