Rifle / SMG Parts
Elevate Your H&K Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your H&K rifle with top-notch parts and accessories. From MP5 and MP5K to SP5 and UMP/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, SP5K, G36, or MP5 22, we have the H&K rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HK SP89, SP5K, MP5K - Forearm
$49.95HK 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...HKP-17397$49.95 -
Safariland Break Free CLP
Safariland
$4.95Break Free Cleaner, Lubricant and Preservative 1/2 OZ. Features: Penetrates and spreads along metal surfaces into every, crack, pit and crevice to undercut contamination and lift. carbon, fouling and residue away. Long-lasting lubricating film...HKP-15435$4.95 -
Geissele HK 416 Trigger
Geissele
$529.95HK 416 SSF Trigger- Geissele This is the newer production Generation II trigger kit. Compatible With: HK 416 Select Fire full auto firearms Each Trigger comes with full installation instructions Please note: After installing the MR556 trigger you must...HKP-16477$529.95 -
HKP MP5K/SP89/SP5K Recoil Rod Assembly - USA
DTAC Dakota Tactical
$34.95HKP MP5K, SP89, & SP5K Recoil Rod Assembly - USA The new US-made Dakota Tactical recoil rod assembly is completely micro-polished and built of the finest materials. This is a great item to have on hand as a spare part as this is a wear and...HKP-02169$34.95 -
H&K MP5, 94 Cocking Tube Support Spring
H&K Heckler & Koch
$6.95H&K MP5, 94 Cocking Tube Support Spring A great spare to have on hand as this part can become worn and be lost. The cocking tube support spring applies pressure to the cocking tube detent to enable the detent to lock into position when the...HKP-01104$6.95 -
HDPS HK UMP/USC (.45 ACP) Flanged Barrel - 8"
HDPS
$329.95HDPS HK UMP 45 ACP 8 Inch Barrel - Flanged HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 barrel. Each barrel is an exact reproduction with all HK German specs. As a bonus, this item counts as 1 of the 3...HKP-02130$329.95 -
HKP HK UMP (.40 S&W/.45 ACP/9mm) USC to UMP ACR Stock Upgrade
HKP HK Parts
$459.95HK USC-UMP ACR Stock Adapter & ACR Stock Combo A new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. Each unit comes complete with the ACR stock, hinge pin, sling mount and stock...HKP-17252$459.95 -
H&K 91/G3 (7.62x51/.308) Chamber Flute Brush
H&K Heckler & Koch
$25.95HK German .308/7.62mm Chamber Flute Brush- New This brush is a must-have for cleaning the chamber flutes on a G3/91-style firearm. If the flutes become clogged or dirty, the firearm will cease to extract properly and render your HK firearm useless, until...HKP-00500$25.95 -
Out Of Stock
H&K HK MR556/416 Ejection Port Cover Door Assembly
H&K Heckler & Koch
$71.95HK German HK 416, MR556 Ejection Port Cover Door Assembly Complete This is the newer polymer style cover found on the latest HK 416 and MR556's. This is the complete ejection port door assembly needed on all AR15 or MR556/HK416 models. Can also be used...HKP-16951$71.95 -
H&K 20 Round HK MR556/416 5.56/.223 Magazine - Black
H&K Heckler & Koch
$69.00H&K 20 Round HK MR556 & 416 5.56/.223 Magazine - Black 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...HKP-00029$69.00 -
HKP HK SP5/K 9mm Thread Protector - Threaded 1/2x28
HKP HK Parts
$19.95HKP/H&K SP5/K 9mm Thread Protector - Threaded 1/2x28 An essential replacement thread protector for lost or damaged thread protectors & caps. This part is compatible with all factory specification SP5 barrels. Specifications: Made In The...HKP-21375$19.95 -
Uzi Top Cover Complete - Surplus
IMI
$24.95Uzi Top Cover Complete - Surplus IMI Uzi SMG top cover surplus. Perfect working condition.HKP-19988$24.95 -
H&K HK MR556 Rear Lower Receiver Locking Pin
H&K Heckler & Koch
$79.95HK MR556, MR762 Locking Pin With Spring Loaded Detent This is the rear takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and improve the...HKP-02672$79.95 -
H&K HK MR556/416 Buffer Retainer Pin
H&K Heckler & Koch
$3.95Buffer Retainer Pin For The HK MR556 & HK 416HKP-12704$3.95 -
H&K HK MR556/416 Clamping Sleeve Safety Lever
H&K Heckler & Koch
$7.95H&K HK MR556/416 Clamping Sleeve Safety Lever There are one of the same pin on both sides.HKP-15252$7.95 -
HKP HK MR556/416 Bench Mat
HKP HK Parts
$24.95HK MR556, HK 416 Bench Mat Our HK MR556, HK416 bench mat is the perfect cleaning & repair mat designed specifically for your Heckler & Koch MR556 & HK416 models. Have fun and learn while you work on your favorite H&K firearm. The soft top...HKP-17169$24.95 -
H&K -4 Roller For Bolt Head 7.96mm - Under-sized
H&K Heckler & Koch
$27.99H&K -4 Roller For Bolt Head 7.96mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -4 roller, each roller is priced per roller. Please Note: The price listed...HKP-00504$27.99 -
H&K HK MR556/416 Slim Line Stock - Black
H&K Heckler & Koch
$249.95HK 416A5, HK 416, MR556 Slim Line Retractable Stock New from HK Germany the slim line retractable stock fits all commercial & mil-spec AR-15/M16 buffer tubes. Marked with the HK logo and issued on specialized HK 416, MR556 rifles. Compatible...HKP-16244$249.95 -
H&K HK MR556/MR762/416/417 V2 Battle Grip
H&K Heckler & Koch
$75.99H&K 416/417 & MR556/762 V2 Battle Grip With Contoured Back Strap - Black HK-manufactured AR15-style pistol grip will fit all AR-15/M-16 lower receivers as well. It is a great upgrade for any AR15, M16/416 style firearm. Provides...HKP-01912$75.99 -
H&K MP5, HK94 Case Deflector Rivet
H&K Heckler & Koch
$9.95H&K MP5, HK94 Case Deflector Rivet Each case deflector, US or German-made, will require two rivets to attach the case deflector to the receiver or flat. If you want the factory look and feel of doing it right, these rivets are a must-have. These are...HKP-00147$9.95 -
HTA HK MP5SD Barrel Cleaning Tool
HiTec Arms
$119.95HTA HK MP5SD Barrel Cleaning Tool Barrel cleaning brush tool for integrally suppressed ported barrels. This is a good tool to have on hand for any MP5SD owner to clean carbon build up and avoid your suppressor seizing on your barrel. Multiple colors...HKP-21347-M$119.95 -
SB Tactical HK UMP Omega / APC Folding Brace - Black
SB Tactical
$79.95SB Tactical HK UMP Omega / APC Folding Brace - Black SB tactical folding brace for the HK UMP, Omega UMP & B&T APC offerings. This is a brand new offering that was made for the new release of the Omega UMP pistol offerings now hitting the market...HKP-18258$79.95 -
B&T APC, HK UMP Folding Stock - Black
B&T Brugger & Thomet
$139.95B&T APC, HK UMP Folding Stock - Black New Swiss manufactured B&T APC & UMP Folding stock. (NFA rules apply) Compatible With: APC 9mm APC .45 APC 556 APC 300 Will also work to place the UMP stock on an UMP or USC conversion. This stock will...HKP-17441$139.95 -
Clipping & Pinning Service HK Lower Housings - Poly
HKP HK Parts
$99.95HK Clipped & Pinned Service - For Polymer Grip Frames We will clip and pin any "push pin" plastic housing for $99.95 each plus return shipping via USPS priority mail. Our technicians can perform the service on a customer supplied grip or we can clip...HKP-00923$99.95 -
H&K Friction Sear For SEF, Navy Trigger Packs
H&K Heckler & Koch
$8.95H&K Friction Sear For SEF, Navy Trigger Packs New HK German Friction Sear for SEF & Navy trigger packs. This item is also referred to as the catch with roller but more commonly called a sear.HKP-16198$8.95 -
H&K German 5.56/.223 & 7.62x51/.308)Hammer Spring - Used
H&K Heckler & Koch
$4.95HK German Rifle Hammer Spring For All .308 & .223 Semi & Full Auto Trigger Packs The rifle 308/556 hammer spring is a popular upgrade in 9mm builds experiencing light primer hits. This is the factory correct 25 lb. weight for positive detonation...HKP-18066$4.95 -
H&K HK MR556/MR762/416/417 Tactical Sling - Black
H&K Heckler & Koch
$76.95H&K HK MR556, MR762, 416, & 417 Tactical Sling - Black OEM HK German part. The tool is built into the HK sling hook. For the MR556 model, a sling adapter will be needed for the front attachment point as the MR556 lacks the ambi sling loop on the...HKP-00028$76.95 -
HKP HK MP5K to MP5 Stock Adapter
HKP HK Parts
$129.95HKP HK MP5K to MP5 Stock Adapter Our new MP5K to MP5 stock adapter is the perfect addition for those looking for a stock that provides a better line of sight and a better cheek rest position like the MP5 A2 fixed stock does. This stock adapter will allow...HKP-20988$129.95 -
Out Of Stock
HKP Semi Auto Shelf, Hanger Block For Receiver
HKP HK Parts
$13.95HK Semi Auto Shelf Weldment, Hanger Block Weldment HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to the rearward portion of the magwell to allow the...HKP-17572$13.95 -
B&T 30 Round TP9/MP9/APC 9mm Magazine - Translucent
B&T Brugger & Thomet
$49.95B&T 30 Round TP9/MP9/APC 9mm Magazine - Translucent Swiss B&T manufactured 30 round magazine for the 9mm TP9, MP9 & APC 9mm Compatible With: TP9 MP9 P26 KH9HKP-17304$49.95 -
Choate HK 91/G3 (7.62x51/.308) Folding Stock Replacement Buffer
Choate
$3.95Choate HK 91 & G3 (7.62x51/.308) Folding Stock Replacement Buffer Choate .308 folding stock replacement buffer for all HK91/G3 PTR stocks. A great item to have on hand as these do wear and are prone to breaking. Compatible With: HK 91/G3HKP-00211$3.95 -
Out Of Stock
H&K G36 FBI 0,1 Lower Complete
$0.00HK German G36, G36K, G36C - FBI (0,1) Lower This is a popular item for use on the SL8 to G36 conversions. The (0,1) G36 lowers are hard to obtain, and availability is limited.HKP-00628$0.00 -
H&K HK MR556/416 Mil-Spec Enhanced Buffer Tube
H&K Heckler & Koch
$254.95HK 416 & MR556 OTB (over the beach) Buffer Tube/Receiver Extension Each mil-spec buffer tube has built-in drainage holes in the rear of the tube and also on the bottom to maximize efficiency. Each buffer tube has ball-bearing rollers to tighten the...HKP-02716$254.95 -
HKP HK UMP (.40 S&W) 30 Round Magazine
HKP HK Parts
$49.95UMP, SMG .40 Cal - 30 Round Magazine Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Each magazine features, steel feed lips, enhanced polymer construction and all correct updated...HKP-17583$49.95 -
H&K MP5SD 9mm Barrel Port Brush
H&K Heckler & Koch
$164.95HK Factory MP5SD Barrel Port Brush A much-needed barrel brush to keep the barrel clean on all factory HK MP5SD'S. Fits HK factory SD barrels or in-spec clone barrels such as RCM US-made barrels. Compatible With: MP5SD models Grab a...HKP-00137$164.95 -
On Sale
HKP MP5SD Rubber Handguard - BLEMISHED
HKP HK Parts
Now: $87.95Was: $169.95HKP MP5SD Rubber Handguard - BLEMISHED THIS COSMETICALLY BLEMISHED ITEM IS FULLY FUNCTIONAL. THIS ITEM IS SOLD AS IS AND NOT ELIGIBLE FOR A RETURN. These handguards will have minor damages on the steel. They will be slightly bent on some areas but...HKP-17400-BNow: $87.95Was: $169.95 -
MI HK MP5K, HK SP89 Top Rail - Black
MI Midwest Industries
$129.95MI HK MP5K, HK SP89 Top Rail - Black Midwest Industries picatinny and M-lok top rail for MP5, HK94 style weapons and clones. An amazing profile option for your MP5 style weapon. Offers a combination of strength, adaptability and extreme lightweight...HKP-19113$129.95 -
H&K 33/93/91/51/G3 (5.56/.223) & (7.62x51/.308) Paddle Mag Release - Standard
H&K Heckler & Koch
$8.95New HK German Paddle Magazine Release This item is a brand new H&K genuine part, not a used or surplus part. It's used for installation on all HK .223 & .308 HK rifles. Compatible With: HK 91 HK G3 HK 51 HK 93 HK 33 HK PSG-1 HK MSG-90HKP-01851$8.95 -
H&K G3 Buffer Screw Locking Washer
H&K Heckler & Koch
$0.95HK G3 Buffer Screw Locking Washer Used in good, working conditon.HKP-16983$0.95 -
SB Tactical - HK MP5 Brace with HKP Adapter - Skeletonized
SB Tactical, HKP HK Parts
$299.95SB Tactical Side Folding Brace For The HK MP5, SP5 model Each brace comes assembled ready to install no assembly required. This complete brace will come assembled with our own HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling...HKP-21055$299.95