All Parts
At HK PARTS, we bring you a wide array of high-quality H&K accessories and components for your favorite firearms. Whether you're upgrading your H&K pistol or rifle, or even looking for parts kits, we've got you covered. Discover a range of top-rated components for popular models like VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, we have it all. Enhance your firearm's performance and functionality with our premium components.
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Out Of Stock
B&T HK G36/SL8 (5.56/.223) Rail w/ Flip Up Sights
B&T Brugger & Thomet
$359.95Swiss Made B&T G36 Picatinny Mounting Rail With Emergency Back-up Sights B&T Switzerland is an HK OEM manufacturer and produce top quality accessories for military and law enforcement around the world. This is a military grade part! Compatible...HKP-16894$359.95 -
H&K 53/51 (5.56/.223) Vented Handguard - Horizontal
H&K Heckler & Koch
$119.95HK German HK 53, HK 51 Vented Hand Guard - Horizontal Style This handguard is vented on all three sides to promote barrel cooling as well as provide an aggressive grip hold and look. Compatible With: HK 53 HK 51 V53, C93 Other HK53, HK51...HKP-01776$119.95 -
H&K G36/SL8 (5.56/.223) Cocking Handle Axle Pin
H&K Heckler & Koch
$11.95HK German G36 & SL8 Cocking Handle Axle Pin This is the rivet pin that is used to attach the swiveling cocking handle to the body of the carrier. These can be replaced as they break and wear. Compatible With: HK G36 HK SL8HKP-01877$11.95 -
H&K G36/SL8 (5.56/.223) Ejector Spring
H&K Heckler & Koch
$35.95HK G36 & SL8 Series Ejector Spring - HK German This is a great item to have on hand as this part is prone to wear and breakage.HKP-01867$35.95 -
H&K HK 416 Roll Pin For 33mm Front Folding Sight
H&K Heckler & Koch
$4.95HK 416 Roll Pin For 33mm Front Folding Sight A great spare to have on hand as they become damaged or lost easily, this item is the enhanced (longer) roll pin for a more secure fitment.HKP-14144$4.95 -
H&K HK G36 Left Side Lower Hammer Spring
H&K Heckler & Koch
$8.95HK G36 Left Side Lower Hammer SpringHKP-01856$8.95 -
H&K HK G36/G36K/G36C Sling
H&K Heckler & Koch
$64.95New HK German carrying sling without quick release. 38 mm wide Compatible With: G36 G36K G36CHKP-18459$64.95 -
H&K HK G36C Gas Piston Rod Spring Assembly - Black
H&K Heckler & Koch
$89.95HK German G36C Gas Piston Rod & Spring Assembly - Complete A must-have item for HK G36C conversions from G36 to SL8's or for spares for your G36C. New HK German factory OEM part. A high wear and replacement part and a must-have for spare parts.HKP-00353$89.95 -
H&K HK MR556/416 Roll Pin for Charging Handle
H&K Heckler & Koch
$7.95HK Clamping Sleeve or Roll Pin for Pawl On Charging Handle This is the longer one that is used on the outside of the charging handle. There are one of these pins used per charging handle.HKP-17063$7.95 -
H&K HK SL8 Complete Rear Sight
H&K Heckler & Koch
$99.95H&K HK SL8 Complete Rear Sight This item can be used on other applications as well as the SL8, G36 models.HKP-16354$99.95 -
HKP HK93, HK33 Spare Parts Kit
H&K Heckler & Koch
$209.95HKP HK93, HK33 Spare Parts Kit Spare parts kits for the most commonly worn parts needed to keep your HK93, HK33 going. This offering also includes a pouch to safely store all your replacement parts and needed tools to have on hand when required. This...HKP-20674$209.95 -
MM 93/33/53 Club Foot Stock
Michaels Machines
$315.95MM Club Foot Stock This clubfoot stock comes assembled with some German and US-made parts. Compatible With: HK 93 HK 53 HK 33 Includes: MM 21E Clubfoot Central Stock Section - US Made US Heavy Rubber Buttpad - US Made HK G3 to HK93 /33 Back Plate -...HKP-01455$315.95 -
Sale
B&T SIG SG 551 Handguard
B&T Brugger & Thomet
Now: $439.95Was: $549.95B&T Handguard 4x NAR for SIG SG 551 Specifications: Color: Black Height max: 68.7 mm Length max: 289.5 mm Length of top rail: 250 mm Length of right rail: 250 mm Length of left rail: 250 mm Length of bottom rail: 250 mm Material: Aluminum NATO...HKP-16871Now: $439.95Was: $549.95 -
DTAC HK93/33/G3K M-LOK Modular Handguard
$189.95DTAC HK93/33/G3K M-LOK Modular Handguard Our Modular Handguard System is packed full of features, taking your roller-lock firearm to the next level of versatility. Features: Made in the USA (922R compliant part) M-LOK accessories compatible 25...HKP-20015$189.95 -
Geissele HK 416 Super Modular M-LOK 10.5" Rail - DDC
Geissele
$499.9510.5" HK416 Handguard M-LOK The Super Modular Rail HK416 MK15 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates the strength, rigidity and modularity...HKP-19805$499.95 -
H&K 416 (5.56/.223) German Flash Hider
H&K Heckler & Koch
$95.95H&K 416 (5.56/.223) German Flash Hider This flash hider is not compatible with suppressors. Compatible With: HK 416 A5- 11" HK 416 A5- 14.5" HK 416 A5 - 16.5" HK 416 A5- 20"HKP-18521$95.95 -
Out Of Stock
H&K 416A5 RAL 8K Stripped Upper Receiver
H&K Heckler & Koch
$0.00HK German Un-Assembled Stripped HK 416A5 Upper Receiver - RAL 8K Brand new factory German RAL 8000 416A5 upper receiver. Compatible With: HK MR556 HK MR223 HK 416 Looking for a matching lower for your build? STS416 A5 LOWER - Specialized Tactical...HKP-18787$0.00 -
H&K G36 IDZ Stock - Concave
H&K Heckler & Koch
$559.95H&K G36 IDZ Stock Concave When it comes to adjustable, folding G36 stocks, the IDZ tops the list. German made by HK with a concave buttpad for reliability and comfort. Features: 3 position forward & back 3 cheek piece elevation...HKP-21501$559.95 -
H&K HK 30 Round 416, HK MR556 5.56x45mm/.223 Maritime Magazine - TiN
H&K Heckler & Koch
$149.95HK 416 & MR556 30 Round Maritime Magazine - TiN Coated Get your hands on some TiN coated factory Heckler & Koch magazines. Each magazine starts out as a fresh 30 round mag before being professionally dsiassembled, TiN coated, and...HKP-21468$149.95 -
H&K HK MR556/416 Handguard Picatinny Quad Rail - FDE
H&K Heckler & Koch
$549.95H&K HK MR556/416 Handguard Picatinny Quad Rail - FDE Handguard with Picatinny Quad Rail profile on 3, 6 and 9 o'clock, STANAG 4694 profile on 12 o'clock. New HK German. Compatible With: HK 416 A5 - 14.5" HK 416 A5 - 16.5" HK 416 A5 - 20"HKP-18553$549.95 -
HK G36/SL8 (5.56/.223) Bolt Head Ejector Pin
$6.95HK G36/SL8 (5.56/.223) Bolt Head Ejector Pin HK Ejector roll pin for G36, SL8 bolt heads. This item is the pin that holds the ejector & ejector spring in place. A common wear & replacement item and a must have when doing bolt head maintenance...HKP-18372$6.95 -
Out Of Stock
HK SL8/G36 Extended Bolt Hold Open Lever
H&K Heckler & Koch
$59.95HK SL8 & G36 Extended Bolt Hold Open Lever New HK German SL8, G36, HK243 bolt hold open lever. A must have upgrade for your HK SL8, Sl8-G36 conversion or G36 firearm. The HK bolt hold open lever is a drop in replacement and requires zero gunsmithing...HKP-17719$59.95 -
HKP AR-15 Commercial Buffer Tube
HKP HK Parts
$24.95AR-15 Commercial Buffer Tube Compatible With: HK MR556 & 416 All AR-15 style platforms Features: Made From T7 7075 Aircraft grade aluminum Made in the USA 6 Position Each features a highly polished inside tube Black Mil-spec triple hard coat...HKP-02728$24.95 -
Out Of Stock
HKP HK 416 Upper Receiver
HKP HK Parts
$489.95US Made Complete HK 416, MR556 Style Upper Receiver New US made HK416/MR556 style upper receiver. Includes: Upper receiver Forward assist assembly Ejection port door assembly Piston guide Compatible With: HK MR556 HK MR223 HK 416 Need a...HKP-17783$489.95 -
HKP HK G36/SL8 (5.56/.223) Cocking Handle
HKP HK Parts
$49.95Cocking Handle For G36 & SL8 Bolt Carriers - USA New USA made charging handle ideal for a 922 repalcement part. Made in the USA.HKP-18251$49.95 -
Sale
HKP HK MR556/416 Upper 8" 416C Style Conversion Kit w/ Handguard
HKP HK Parts
Now: $1,119.95Was: $1,495.95MR556 & HK416 Upper Conversion Kit - 8" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original HK 416C 8" barrel conversion kit for 416 or MR556. Each upgrade kit is as close as you can get to a factory HK...HKP-18628Now: $1,119.95Was: $1,495.95 -
PWS Primary Weapons Systems HK 416 FSC556 Tactical Compensator
Primary Weapon Systems
$89.95FSC556 Tactical Compensator (Muzzle Brake) Compensator The PWS FSC556 has the very best compensation and decrease in muzzle rise. Combine that with enough flash suppression to keep the flash out of your optics and line of sight. Not to mention...HKP-01647$89.95 -
RCM HK 53 (5.56/.223) Barrel - Threaded 16x1
RCM
$164.95RCM HK 53 (5.56/.223) Barrel - Threaded 16x1 These are the finest US-made barrels available and come highly recommended by HKPARTS. Machined 100% in the USA, 922r compliant, and counts as 1 US-made 922r compliant part. Specifications: Cold Hammer Forged...HKP-01156$164.95 -
RCM HK 93/53/33 (5.56/.223) Extractor
RCM
$24.95RCM HK 93/53/33 (5.56/.223) Extractor New US-made HK RCM HK 93, HK 33, HK 53 .223/5.56 Extractor. Each unit is made with an enhanced material and polished for optimum feeding and extraction. This is simply the finest HK93,33,53 extractor available. A...HKP-14962$24.95 -
Out Of Stock
Geissele HK 416 Super Modular M-LOK 14.5" Rail - DDC
Geissele
$549.9514.5" HK416 Super Modular Rail M-LOK The Super Modular Rail HK416 M-LOK was designed to replace the standard rail on an HK416 or MR556 weapon platform. The rail system utilizes the stock HK barrel nut, but incorporates the strength, rigidity and...HKP-19808$549.95 -
H&K 93/53/33 (5.56/.223) Full Auto Bolt Carrier - Buffered Style - Used
H&K Heckler & Koch
$345.95HK German production HK German HK33, 33K, 93 Full Auto Bolt Carrier Used Buffered Style Hard to find, vintage HK German buffered style F/A bolt carrier. Perfect for a spare or to upgrade your clone or conversion to the factory correct latest style bolt...HKP-16455$345.95 -
H&K G36/SL8 (5.56/.223) Forearm Original Version
H&K Heckler & Koch
$99.95German HK G36 & HK SL8 Black Forearm- 1st Gen This part is the older style 1st gen that has the bipod grove to allow the factory HK bipod to be installed. New HK black in color without a heat shield. No longer in production...HKP-01936$99.95 -
H&K HK 416 Ejector Retaining Pin
H&K Heckler & Koch
$6.95HK 416 Ejector Retaining Pin This factory HK German part is the pin that holds the ejector in place on the bolt head. Great to have as a spare part.HKP-00053$6.95 -
H&K HK 416 Flip Up Rear Sight- 3mm
H&K Heckler & Koch
$299.95HK 416, MR556 & 417 Flip Up Rear Sight (Diopter 3mm Sight) Attaches to any standard Picatinny rail. No hardware is needed as this is a self-contained quick-attach rear sight assembly. This unique HK-designed sight features a quick & easy push...HKP-01405$299.95 -
H&K HK MR556/MR762/416 Sniper PSG1 Style Grip - RAL 8K
H&K Heckler & Koch
$249.95H&K 416/417 & MR556/762 PSG1 Style Sniper Grip - RAL 8000 HK German PSG1 style sniper factory. Each grip will fit all AR-15/M-16 lower receivers as well. Superior fit & feel to any other grip on the market. HK has hit a home run with their...HKP-17693$249.95 -
H&K MIL-SPEC 416 OTB Buffer Tube & HK E1 Stock Combo
H&K Heckler & Koch
$469.95HK 416 OTB E1 Stock & Buffer Tube ComboGenuine HK 416 E1 Stock with the new style marine environment "over the beach" buffer tube. Buffer tube has ball bearing rollers to tighten the stock when locked in position, and helps smooth the sliding action...HKP-20104$469.95 -
Sale
SB Tactical AR-15 Pistol Stabilizing Brace-Retractable
SB Tactical
Now: $189.50Was: $239.99SB Tactical AR-15 Pistol Stabilizing Brace-Retractable The SB PDW Pistol Stabilizing Brace® was designed in conjunction with Maxim Defense. It is 3-position adjustable brace compatible with mil-spec bolt carrier groups and carbine buffers. Compatible...HKP-18183Now: $189.50Was: $239.99 -
Solar Tactical HK SL8 Kydex Ambidextrous Grip Wrap - Black
Solar Tactical
$59.95Kydex Grip Wrap - Ambidextrous - HK SL8 Featureless Kydex grip wrap for use with detachable magazines. Prevents a wrap around style pistol grip. Allows the use of the factory magazine release and detachable magazines over 10 rounds. Preban hi-capacity...HKP-18894$59.95 -
SureFire (5.56/.223) WARCOMP Flash Hider - Threaded 1/2x28
Surefire
$159.95SureFire (5.56/.223) WARCOMP Flash Hider - Threaded 1/2x28 This AR15 flash hider is compatible with 1/2x28 threaded barrels. Specifications: Stainless Steel DLC Coating Length 2.7 inches Threaded 1/2x28 Compatible With: HK 416/MR556 HK MR223 HK...HKP-18044$159.95 -
B&T HK416, HK MR223 M-LOK Handguard for (11") - Black
B&T Brugger & Thomet
$279.95B&T M-LOK Handguard for HK416/MR223 (11") - Black B&T's one-piece 11-inch M-LOK handguard for the Heckler & Koch HK416 and civilian equivalent MR223 is an amazing improvement for the combat value of these rifles. A direct replacement for the...HKP-20402$279.95