HK MK23 Series

HK MK23 Series

Shop from one of the largest selections of HK MK23 parts, including Mark 23 Barrels, Triggers, and Magazines. Customize your MK23 with Magazine Extensions, Optics & Plates, and Grips for unmatched performance.

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  • H&K HK .45 ACP Pistols Barrel O-Ring - Green H&K HK .45 ACP Pistols Barrel O-Ring - Green

    H&K HK .45 ACP Pistols Barrel O-Ring - Green

    H&K Heckler & Koch

    $4.95
    HK .45 ACP Pistols Barrel O-Ring - Green Get them while you can, as they are no longer available in green. The green o-rings were used when HK introduced o-rings on the Mark 23 and USP 45 Tactical HK pistols. All HK O-rings are made of the same material...
    HKP-01984
    $4.95
    Qty in Cart: 0
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  • HK Pistol Trigger Return Spring Tool HK Pistol Trigger Return Spring Tool

    HK Pistol Trigger Return Spring Tool

    USA

    $16.95
    HK Trigger Return Spring Tool - Pliers The HK Parts trigger return spring pliers were created out of necessity.  If you have ever attempted this replacement procedure on an HK pistol, you will know just how tricky the execution can be.  Our...
    HKP-16031
    $16.95
    Qty in Cart: 0
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    $16.95
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  • RennSteig 8 Piece Punch Set For HK Firearms RennSteig 8 Piece Punch Set For HK Firearms

    RennSteig 8 Piece Punch Set For HK Firearms

    RennSteig

    $34.95
    Metric Parallel Pin Punch Set With Guide Sleeves - German Manufacture - 8 Piece This punch set is the exact same set used in the HK Armorer classes and approved by HK for use when installing & removing the roll pins from HK pistols & rifles...
    HKP-16737
    $34.95
    Qty in Cart: 0
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  • HKP HK .45 Barrel O-Ring All Caliber Pistols - Red HKP HK .45 Barrel O-Ring All Caliber Pistols - Red

    HKP HK .45 Barrel O-Ring All Caliber Pistols - Red

    HKP HK Parts

    $4.95
    HKP HK .45 Barrel O-Ring All Caliber Pistols - Red A rare find as we have found a small lot of HK red-colored HK .45 O-rings.  All HK O-rings are still made of the same material as the newer black O- rings only in the HK red color. A great spare and...
    HKP-19316
    $4.95
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  • On Sale
    HKP Armorers Bench Block Tool HKP Armorers Bench Block Tool

    HKP Armorers Bench Block Tool

    HKP HK Parts

    Now: $9.95
    Was: $14.95
    HK Parts Armorers Puck Punch Bench Block Tool For All HK Firearms The HK armorers' puck punch bench block tool is standard issue at all HK armorers' courses. The purpose of the tool is to aid in installing axle and roll pins in your firearm while...
    HKP-17133
    Now: $9.95
    Was: $14.95
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  • H&K 12 Round HK Mark 23 .45 ACP Magazine H&K 12 Round HK Mark 23 .45 ACP Magazine

    H&K 12 Round HK Mark 23 .45 ACP Magazine

    H&K Heckler & Koch

    $59.00
    HK German Mark 23 & SOCOM 12 Round .45 Cal Magazine New factory fresh German HK manufactured. The real deal steel-bodied factory fresh magazine with the upgraded maritime finish. Compatible With: HK Mark 23 SOCOM .45
    HKP-00295-M
    $59.00
    Qty in Cart: 0
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  • H&K HK Barrel O-Ring .45 ACP Caliber Pistols - Black H&K HK Barrel O-Ring .45 ACP Caliber Pistols - Black

    H&K HK Barrel O-Ring .45 ACP Caliber Pistols - Black

    H&K Heckler & Koch

    $4.95
    H&K HK Barrel O-Ring .45 ACP Caliber Pistols - Black A great spare and a much-needed part for your HK barrel. This factory part is a high-wear item, as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup with...
    HKP-00296
    $4.95
    Qty in Cart: 0
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  • Maglula Universal Magazine Loader Maglula Universal Magazine Loader

    Maglula Universal Magazine Loader

    Maglula

    $34.95
    Maglula Universal Magazine Loader The UpLULA mag loader is a military grade-quality universal pistol magazine loader and unloader designed for loading and unloading almost all 9mm Luger up to .45ACP magazines, single and double stack, and 1911's of all...
    HKP-14531
    $34.95
    Qty in Cart: 0
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  • HKP, H&K 17 Round HK Mark 23 / USP .45 ACP Complete Magazine - Black HKP, H&K 17 Round HK Mark 23 / USP .45 ACP Complete Magazine - Black

    HKP, H&K 17 Round HK Mark 23 / USP .45 ACP Complete Magazine - Black

    H&K / HK Parts

    $119.95
    Magazine Extension Complete - 17 Round - HK Mark 23/USP .45 Each mag comes fully assembled and ready for use. HK Parts takes an existing German HK 12 round mag coupled with the +5 mag extension and assembles them into a complete 17 round mag. What you...
    HKP-19465
    $119.95
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  • HKP HK USP45, Mark 23 +5 Magazine Extension HKP HK USP45, Mark 23 +5 Magazine Extension

    HKP HK USP45, Mark 23 +5 Magazine Extension

    HKP HK Parts

    $49.95
    Magazine Extension - +5 - HK USP45 & Mark 23 Super easy to install, simply add the mag extension to your existing mag body and follower. An easy 2 min swap. No gunsmithing needed. Made in the USA out of aircraft grade hard coat anodized aluminum...
    HKP-19493-M
    $49.95
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  • HKP Armorer's Tool Kit HKP Armorer's Tool Kit

    HKP Armorer's Tool Kit

    HKP HK Parts

    $67.95
    HKP Armorer's Tool Kit   Includes: HK Parts Armorers Puck Punch Bench Block Tool 8 Piece German Rennsteig punch set 20 Piece German Feeler gauge set
    HKP-18659
    $67.95
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  • HKP HK Mark 23 Gen 2 Rail Mount Compensator - Black HKP HK Mark 23 Gen 2 Rail Mount Compensator - Black

    HKP HK Mark 23 Gen 2 Rail Mount Compensator - Black

    HKP HK Parts

    $329.95
    HKP HK Mark 23 Gen 2 Rail Mount Compensator - Black The HK Parts Mark 23 Compensator is the perfect addition to your firearm. This compensator also includes a picatinny rail so you can still use your lights/lasers. The MK23 compensator can be used with...
    HKP-18745
    $329.95
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  • H&K HK Mark 23 Thread Protector H&K HK Mark 23 Thread Protector

    H&K HK Mark 23 Thread Protector

    H&K Heckler & Koch

    $40.99
    New factory HK Mark 23 SOCOM thread protector This is the only thread protector that HK offers that will fit the HK Mark 23 Pistol. This is a hard-to-find item and a must-have for all MK23 Owners. Compatible With: All H&K Mark 23/ SOCOM barrels...
    HKP-00293
    $40.99
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  • AntiVenom-XPLC Lubricant and Cleaner AntiVenom-XPLC Lubricant and Cleaner

    AntiVenom-XPLC Lubricant and Cleaner

    Strike Industries

    $14.95
    AntiVenom-XPLC Lubricant and Cleaner Strike Industries introduces the industry's most extreme general purpose weapons lubrication, cleaning, and protection solution. Strike Industries AntiVenom-XPLC is the culmination of years of research and...
    HKP-18410
    $14.95
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  • HKP Pistol Rug Case - Bundesadler HKP Pistol Rug Case - Bundesadler

    HKP Pistol Rug Case - Bundesadler

    HKP HK Parts

    $19.95
    HKP Pistol Rug - Bundesadler Keep your handgun safe with the HK Parts pistol rug featuring the iconic German Bundesadler crest. This heavy duty pistol case will accommodate one pistol and up to 5 magazines.  Features: Measures 8x13" closed and...
    HKP-21014-M
    $19.95
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  • HKP HK Mark 23 Picatinny Rail Adapter - Gen 2 HKP HK Mark 23 Picatinny Rail Adapter - Gen 2

    HKP HK Mark 23 Picatinny Rail Adapter - Gen 2

    HKP HK Parts

    $99.95
    HK Mark 23 Picatinny Rail Adapter (SOCOM) - Gen 2 The original Mark 23 rail adapter mount provides for a seamless attachment point of any tactical light, laser setup that attaches by way of a Picatinny rail. These units have been tested in the harshest...
    HKP-01470
    $99.95
    Qty in Cart: 0
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  • Safariland Silicone Gun & Reel Cloth Safariland Silicone Gun & Reel Cloth

    Safariland Silicone Gun & Reel Cloth

    Safariland

    $3.95
    Safariland Silicone Gun & Reel Cloth Silicone gun cloth for all HK firearms to preserve and protect your firearms finish. Will also work for any firearm, magazine or part. A great way to protect your collectibles.
    HKP-17630
    $3.95
    Qty in Cart: 0
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    $3.95
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  • H&K/HKP 22 Round HK USP45/Mark 23 .45 Complete Magazine H&K/HKP 22 Round HK USP45/Mark 23 .45 Complete Magazine

    H&K/HKP 22 Round HK USP45/Mark 23 .45 Complete Magazine

    H&K / HK Parts

    $149.95
    Mark 23/USP .45 - 22 Round Magazine Complete  HK Parts takes an existing 12 round mag the +10 mag extension and assembles them into a working 22 round magazine. This offering is a valuable option for those that need a backup ultra capacity magazine...
    HKP-21372-M
    $149.95
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  • HKP HK Mark 23, SOCOM Bench Mat HKP HK Mark 23, SOCOM Bench Mat

    HKP HK Mark 23, SOCOM Bench Mat

    HKP HK Parts

    $13.95
    HKP HK Mark 23, SOCOM Bench Mat This isn't your ordinary gun cleaning mat! Show your pride for your HK Mark 23 firearm while using our high quality neoprene rubber backed and cloth topped gun cleaning mat to protect your gun bench, desk, kitchen table,...
    HKP-17278
    $13.95
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  • HKP HK USP45/Mark 23 +10 Magazine Extension HKP HK USP45/Mark 23 +10 Magazine Extension

    HKP HK USP45/Mark 23 +10 Magazine Extension

    HKP HK Parts

    $69.95
    Magazine Extension - +10 - HK USP .45 & Mark 23 Easy to install. Simply add the mag extension to your existing mag body and follower. No gunsmithing needed. Made 100% in the USA out of aircraft-grade hard coat anodized aluminum with steel hardware...
    HKP-21371-M
    $69.95
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  • HKP HK Mark 23 RMR Optic Plate HKP HK Mark 23 RMR Optic Plate

    HKP HK Mark 23 RMR Optic Plate

    HKP HK Parts

    $99.95
    HKP HK Mark 23 RMR Optics Plate The finest Red dot mounting solution for your HK MK23. New optic plate that replaces your rear sight to allow a Red dot optic to mount on your Mark 23 slide. A quick  and easy install that can be done in the matter of...
    HKP-21415
    $99.95
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  • H&K 12 Round HK Mark 23 Floor Plate - Black H&K 12 Round HK Mark 23 Floor Plate - Black

    H&K 12 Round HK Mark 23 Floor Plate - Black

    H&K Heckler & Koch

    $8.95
    HK Mark 23 12 Round Magazine Floor Plate A great item to have on hand as the floor plates can become cracked and broken with use and time. Compatible With: Mark 23 12 round mags SOCOM Mark 23 12 round mags
    HKP-01196
    $8.95
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    $8.95
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  • H&K HK USP/Mark 23 .45 ACP Magazine Follower H&K HK USP/Mark 23 .45 ACP Magazine Follower

    H&K HK USP/Mark 23 .45 ACP Magazine Follower

    H&K Heckler & Koch

    $9.95
    USP .45 & Mark 23 SOCOM Magazine Follower A great spare to have on hand as this is a wear and replacement item.  Compatible With: HK USP 45 ACP 10 Round HK USP 45 ACP 12 Round HK USP .45 Tactical, Elite, Expert HK Mark 23 10 Round HK Mark 23 12...
    HKP-01586
    $9.95
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    $9.95
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  • H&K HK USP/Mark 23 Recoil Assemblies Snap Ring

    H&K HK USP/Mark 23 Recoil Assemblies Snap Ring

    H&K Heckler & Koch

    $7.95
    H&K HK USP/Mark 23 Recoil Assemblies Snap Ring The snap ring secures the spring onto the recoil buffer spring assembly. This part can come loose and become lost or easily worn. Once you remove them, HK suggests replacing them with a new snap ring...
    HKP-01258
    $7.95
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    $7.95
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  • AIM (.45 ACP) Laser Bore Sighter AIM (.45 ACP) Laser Bore Sighter

    AIM (.45 ACP) Laser Bore Sighter

    AIM

    $19.95
    AIM (.45 ACP) Laser Bore Sighter Red Laser Bore Sight-.45 Laser bore sight system. Each unit comes complete with batteries (4)and instructions for operation. Easy to use and priced so that every shooter can have one for each caliber of firearm that they...
    HKP-16217
    $19.95
    Qty in Cart: 0
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  • HKP HK  USP .45/Mark 23 Enhanced Magazine Extension Kit +5 HKP HK  USP .45/Mark 23 Enhanced Magazine Extension Kit +5

    HKP HK USP .45/Mark 23 Enhanced Magazine Extension Kit +5

    HKP HK Parts

    $49.95
    HKP HK USP .45/MK23 Enhanced Magazine Extension Kit +5 HK Parts USP .45/MK23 enhanced magazine extension. Our design represents a symbiotic balance of form and function.  The added grooves enhance dexterity during those quick mag swaps while...
    HKP-21458-M
    $49.95
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  • HKP H&K 17 Round HK USP45, Mark 23 .45 Complete Magazine - Red HKP H&K 17 Round HK USP45, Mark 23 .45 Complete Magazine - Red

    HKP H&K 17 Round HK USP45, Mark 23 .45 Complete Magazine - Red

    $119.95
    Mark 23/USP .45 - 17 Round Magazine Complete - Red HK Parts takes an existing 12 round mag the +5 mag extension and assembles them into a working 17 round mag. This offering is a valuable option for those that need a backup ultra capacity magazine...
    HKP-19495
    $119.95
    Qty in Cart: 0
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    $119.95
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  • HKP HK Mark 23 .45 ACP Micro Comp - Threaded 16x1 RH HKP HK Mark 23 .45 ACP Micro Comp - Threaded 16x1 RH

    HKP HK Mark 23 .45 ACP Micro Comp - Threaded 16x1 RH

    HKP HK Parts

    $29.95
    HKP HK Mark 23 .45 ACP Micro Comp - Threaded 16x1 RH The HK Parts Micro Comp & Thread Protector is a lightweight, fully functional accessory that serves as both a compensator and thread protector. It attaches easily to any factory spec 16x1 RH Mark...
    HKP-21319
    $29.95
    Qty in Cart: 0
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  • Safariland Break Free CLP Safariland Break Free CLP

    Safariland Break Free CLP

    Safariland

    $4.95
    Break 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
    Qty in Cart: 0
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  • H&K 10 Round HK USP/Mark 23 .45 ACP, P30 .40 S&W Magazine Spring H&K 10 Round HK USP/Mark 23 .45 ACP, P30 .40 S&W Magazine Spring

    H&K 10 Round HK USP/Mark 23 .45 ACP, P30 .40 S&W Magazine Spring

    H&K Heckler & Koch

    $8.95
    10 Round HK USP/Mark 23 .45 ACP, P30 .40 S&W Magazine Spring  A must-have spare part, as magazine springs are prone to wear and tear. Compatible With: HK USP .45 10 round HK USP .45 Tactical 10 round HK Mark 23 10 round HK 9mm & 40 cal P30...
    HKP-01675
    $8.95
    Qty in Cart: 0
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    $8.95
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  • On Sale
    H&K Pistol Mag 4 Slot Pouch H&K Pistol Mag 4 Slot Pouch

    H&K Pistol Mag 4 Slot Pouch

    H&K Heckler & Koch

    Now: $19.95
    Was: $27.95
    H&K Pistol Mag 4 Slot Pouch   Features: HK licensed red HK embroidered logo Mil-Spec Ballistic nylon Durable construction with heavy duty velcro fold-over flap  Specifications: Height: 6" Length: 8.5" Color: Black (4) Compartments to fit...
    HKP-19693
    Now: $19.95
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  • HKP HK Mark 23 Picatinny Adapter HKP HK Mark 23 Picatinny Adapter

    HKP HK Mark 23 Picatinny Adapter

    HKP HK Parts

    $99.95
    HK Mark 23 Picatinny Rail Adapter  Our new Mark 23 Picatinny rail adapter mount provides attachment points for any tactical light or laser setup that attaches by way of a Picatinny rail. Made from aircraft-grade aluminum, hard-coated...
    HKP-21180
    $99.95
    Qty in Cart: 0
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  • HKP 17 Round HK USP 45/Mark 23 Magazine .45 ACP 17 Round - Cerakote Red HKP 17 Round HK USP 45/Mark 23 Magazine .45 ACP 17 Round - Cerakote Red

    HKP 17 Round HK USP 45/Mark 23 Magazine .45 ACP 17 Round - Cerakote Red

    HKP HK Parts

    $124.99
    HKP 17 Round HK USP 45/Mark 23 Magazine .45 ACP 17 Round - Cerakote Red Our new extended magazine is compatible with USP .45 and the mark 23 and now with a tactical red Cerakote finish. This is a must have extended magazine only available here at HK...
    HKP-20608
    $124.99
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    $124.99
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  • HKP 17 Round HK USP .45/Mark 23 Enhanced Magazine HKP 17 Round HK USP .45/Mark 23 Enhanced Magazine

    HKP 17 Round HK USP .45/Mark 23 Enhanced Magazine

    HKP HK Parts

    $113.95
    HKP 17 Round HK USP .45/Mark 23 Enhanced Magazine - Black Our 17 round magazine starts life as a factory HK 12 round magazine then gets a capacity bump with our +5 mag extension. Compatible With: HK USP .45 HK Mark 23
    HKP-21459-M
    $113.95
    Qty in Cart: 0
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    $113.95
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  • HKP Pistol Rug Case HKP Pistol Rug Case

    HKP Pistol Rug Case

    HKP HK Parts

    $19.95
    HKP Pistol Rug Keep your handgun safe with the HK Parts pistol rug. This heavy duty pistol case will accommodate one pistol and up to 5 magazines.  Features: Measures 8x13" closed and 13x17" open
    HKP-21010-M
    $19.95
    Qty in Cart: 0
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    $19.95
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  • H&K HK USP/Mark 23 .45 ACP Magazine Locking Plate H&K HK USP/Mark 23 .45 ACP Magazine Locking Plate

    H&K HK USP/Mark 23 .45 ACP Magazine Locking Plate

    H&K Heckler & Koch

    $8.95
    HK Magazine Locking Plate For .45 Cal - 12 Round Magazines New HK German magazine locking plate. Compatible With: HK Mark 23 12 Round HK USP .45 12 Round
    HKP-01588
    $8.95
    Qty in Cart: 0
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    $8.95
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  • H&K Tactical Pistol Case - OD Green H&K Tactical Pistol Case - OD Green

    H&K Tactical Pistol Case - OD Green

    H&K Heckler & Koch

    $129.95
    H&K Tactical Pistol Case - OD Green Keep your handgun safe and secure with the HK Tactical Nylon Case. This heavy duty case will accommodate two pistols, accessories and two magazines. Includes movable, velcro-backed modular double magazine pouch,...
    HKP-17154
    $129.95
    Qty in Cart: 0
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  • H&K HK .45 ACP Pistol Field Cleaning Kit H&K HK .45 ACP Pistol Field Cleaning Kit

    H&K HK .45 ACP Pistol Field Cleaning Kit

    H&K Heckler & Koch

    $69.95
    H&K HK .45 ACP Pistol Field Cleaning Kit   This is a genuine HK factory cleaning kit and is recommended by HK for all HK pistol owners. Compatible With: HK45, HK45 Tactical HK45C, HK45C Tactical USP 45, USP 45 Tactical USPC 45, USPC...
    HKP-01245
    $69.95
    Qty in Cart: 0
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