Magazines / Extensions / Brass Catchers

Magazines / Extensions / Brass Catchers

Explore our extensive selection of HK magazines and extensions designed for enhanced capacity and performance across a range of HK models including the VP9, USP, MP5, and more. From rugged steel magazines to advanced polymer extensions, our inventory caters to both tactical and recreational needs, ensuring reliable feeding and durability. Enhance your HK firearm with precision-engineered magazine upgrades, available now for various calibers and applications.

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  • Out Of Stock
    On Sale
    New - MM HK 21 (7.62x51/.308) Belt Box Adapter - HKP-01844 HK 21 Ammunition Belt Box Adapter

    HK 21 Ammunition Belt Box Adapter

    Michaels Machines

    Now: $247.45
    Was: $274.95
    Belt Box Adapter A new custom-made adapter - allows you to use HK German factory HK21E belt boxes on the HK21 older style or original style belt feds. It is a drop-in design that will enable easy and quick use of the superior HK21E belt boxes...
    Now: $247.45
    Was: $274.95
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    Now: $247.45
    Was: $274.95
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  • On Sale
    New - KCI Glock 50-Round 9mm Drum Magazine - Case of 20 - HKP-21888 KCI Glock 50-Round  9mm Drum Magazine - Case of 20
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    KCI Glock 50-Round 9mm Drum Magazine - Case of 20

    Now: $374.96
    Was: $799.95
    KCI Glock 50-Round 9mm Drum Magazine - Black - Case of 20 CLEARANCE ITEMS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL CLEARANCE SALES ARE FINAL. Features: Capacity: 50 Rounds Caliber: 9mm Construction:...
    Now: $374.96
    Was: $799.95
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    Now: $374.96
    Was: $799.95
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  • On Sale
    New - HKP +5 Round HK VP/P30 Magazine Extension Kit - Red - BLEMISHED - HKP-21108-RE-B HK VP, P30 Magazine Extension Kit - +5 Round - Red - BLEMISHED
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    HK VP, P30 Magazine Extension Kit - +5 Round - Red - BLEMISHED

    HKP HK Parts

    Now: $31.95
    Was: $44.95
    HKP +5 Round HK VP/P30 Magazine Extension Kit - Red - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The new and improved Gen 2 Model is now...
    Now: $31.95
    Was: $44.95
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    Now: $31.95
    Was: $44.95
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  • On Sale
    New - HKP HK P2000 +10 Magazine Extension Kit – Black - HKP-20811 HK P2000 Magazine Extension Kit - +10
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    HK P2000 Magazine Extension Kit - +10

    HKP HK Parts

    Now: $51.99
    Was: $64.99
    HKP HK P2000 +10 Magazine Extension Kit HK Parts magazine extension adds 10 additional rounds to the HK P2000 magazine with the simple swap of the floor plate & high-reliability mag spring. HKP highly recommends using a magazine loader when loading...
    Now: $51.99
    Was: $64.99
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    Now: $51.99
    Was: $64.99
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  • Used - HK G3 .22 20 Round Conversion Magazine - USED - HKP-20750 HK G3 .22 20 Round Conversion Magazine - USED
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    HK G3 .22 20 Round Conversion Magazine - USED

    $199.95
    HK G3 .22 20 Round Conversion Magazine - USED HK .22 caliber conversion kit 20-round magazine for The G3/91. Ideal for those that have the caliber conversion kit and wants to stack up on spare magazines. Condition is used to like new in the gray paint...
    $199.95
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    $199.95
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  • Used - H&K 30 Round HK MP5 40/10 Magazine - Gray - Used - HKP-01726 HK 30 Round HK MP5 40/10 Magazine - Gray - Used
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    HK 30 Round HK MP5 40/10 Magazine - Gray - Used

    H&K Heckler & Koch

    $159.95
    30 Round HK MP5 40/10 Magazine - Gray - USED These magazines are no longer available and we have just a few remaining units.  Once they are gone, they are gone for good. These magazines are USED and are not eligible for return.  Please...
    $159.95
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    $159.95
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  • Out Of Stock
    On Sale
    Used - H&K 91/G3 (7.62x51/.308) 20 Round Magazines - Shooter Value - 36 Pack - Steel - HKP-17390 HK91, G3 20 Round Magazines - Shooter Value - 36 Pack - Steel

    HK91, G3 20 Round Magazines - Shooter Value - 36 Pack - Steel

    H&K Heckler & Koch

    Now: $314.95
    Was: $349.95
    HK 91, G3, PTR Shooter Pack - 36 Quantity 20 Round Magazines  All STEEL MAGS - RARE!!! For all those shooters or collectors out there this is the deal for you. For a limited time or while supplies last we have a case of 3 dozen shooter grade all...
    Now: $314.95
    Was: $349.95
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    Was: $349.95
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  • On Sale
    New - H&K VP9SK/P30SK Magazine Extension Locking Floorplate - HKP-21993 HK VP9SK, P30SK Magazine Floorplate Extension - Locking
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    HK VP9SK, P30SK Magazine Floorplate Extension - Locking

    H&K Heckler & Koch

    Now: $20.70
    Was: $23.00
    H&K VP9SK/P30SK Magazine Extension Locking Floorplate Secures the extension to the magazine body on P30SK and VP9SK magazine extensions. Compatible With: HK VP9SK/P30SK
    Now: $20.70
    Was: $23.00
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    Now: $20.70
    Was: $23.00
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  • Out Of Stock
    On Sale
    New - HK UMP Dual Magazine Clamp - HKP-99099 HK UMP Clamp - Dual Magazine

    HK UMP Clamp - Dual Magazine

    USA

    Now: $7.46
    Was: $28.95
    HK UMP Dual Magazine Clamp US made dual magazine clamp for the UMP platform.  Elastic retention allows for quick mag changes. Compatible With: HK UMP THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE.  SALE IS FINAL.
    Now: $7.46
    Was: $28.95
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  • On Sale
    New - B&T 30 Round APC10/SPC10 Magazine - 10mm - HKP-21720 New - B&T 30 Round APC10/SPC10 Magazine - 10mm - HKP-21720
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    B&T APC10, SPC10 Magazine - 30 Round

    B&T Brugger & Thomet

    Now: $90.00
    Was: $100.00
    B&T 30 Round APC10/SPC10 Magazine - 10mm Compatible with any G pattern 10mm B&T firearm.  Compatible With: B&T APC10 B&T SPC10
    Now: $90.00
    Was: $100.00
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    Now: $90.00
    Was: $100.00
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  • On Sale
    New - B&T 20 Round Magazine 9mm with Improved Rubber Bumper - HKP-21714 B&T MP9, TP9, APC9, SPC9, GHM9, KH9 Magazine - 20 Round - Improved Rubber Bumper
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    B&T MP9, TP9, APC9, SPC9, GHM9, KH9 Magazine - 20 Round - Improved Rubber Bumper

    B&T Brugger & Thomet

    Now: $58.50
    Was: $65.00
    B&T 20 Round Magazine 9mm with Improved Rubber Bumper The B&T factory 20 round magazine is designed for reliable performance in B&T firearms. Equipped with an upgraded rubber bumper for added durability and protection, it provides a secure...
    Now: $58.50
    Was: $65.00
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    Was: $65.00
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  • Out Of Stock
    On Sale
    New - H&K 23E (5.56/.223) Belt Box - HKP-18012

    HK 23E Ammunition Belt Box - 5.56 / .223

    H&K Heckler & Koch

    Now: $449.95
    Was: $499.95
    HK23E & MM23E Belt Box - German HK Brand new German HK23E, MM23E made feed box. The German units have long since been out of production so getting these new old stock German HK feed boxes is a windfall and a rare opportunity. Compatible With: HK 23E...
    Now: $449.95
    Was: $499.95
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    Was: $499.95
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