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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  • New - HKP HK G36 Replacement 30 Round Magazine Spring - HKP-21830 HK G36 Magazine Spring - 30 Round
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    HK G36 Magazine Spring - 30 Round

    HKP HK Parts

    $7.95
    HKP HK G36 Replacement 30 Round Magazine Spring A high-quality replacement spring designed to restore optimal performance to your G36 magazine. Built to withstand frequent use, this component ensures smooth feeding and reliable function. Compatible...
    HKP-21830
    $7.95
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  • New - HK UMP .45 15 Round Magazine Spring - HKP-20679 HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US
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    HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US

    HKP HK Parts

    $9.95
    HK UMP .45 15 Round Magazine Spring Perfect for spares and to have on hand as these are consumable item that needs to be replaced from time to time. A must have item if you own a USC/UMP conversion or UMP.
    HKP-20679
    $9.95
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  • On Sale
    New - HKP 24 Round HK USP/Tactical .45 ACP Magazine Extension - HKP-17454 HKP 24 Round HK USP/Tactical .45 ACP Magazine Extension
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    HKP 24 Round HK USP/Tactical .45 ACP Magazine Extension

    HKP HK Parts

    Now: $24.95
    Was: $39.95
    HKP 24 Round HK USP/Tactical .45 ACP Magazine Extension The HK Parts manufactured HK USP 45 mag extension allows the user to convert existing USP .45 12 round magazine to an enhanced 24 round magazine capacity. Easy to install, each kit comes complete...
    HKP-17454
    Now: $24.95
    Was: $39.95
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    Was: $39.95
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  • New - H&K HK USP/USPC Complete Mag Lockout Device - HKP-16397 HK USP, USP Compact Complete Mag Lockout Device
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    HK USP, USP Compact Complete Mag Lockout Device

    H&K Heckler & Koch

    $19.95
    H&K HK USP/USPC Complete Mag Lockout Device Easily installs and replaces the existing lanyard to the newer style lock out upgrade for the magazine lockout. Used to comply with certain state's laws and for added safety in some conditions and...
    HKP-16397
    $19.95
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  • New - H&K 10/30 Round HK G36 Magazine Floor Plate - Black - HKP-16381 HK G36 Magazine Floorplate - 10 and 30 Round
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    HK G36 Magazine Floorplate - 10 and 30 Round

    H&K Heckler & Koch

    $11.95
    H&K 10/30 Round HK G36 Magazine Floor Plate New factory German G36 30 round and 10 round magazine floor plate.
    HKP-16381
    $11.95
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  • New - HKP HK 21 (7.62x51/.308) Feed Mechanism Latch Lever - HKP-00235 HK21 Feed Mechanism Latch Lever
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    HK21 Feed Mechanism Latch Lever

    Michaels Machines

    $69.95
    HKP HK21 Feed Mechanism Latch Lever - 7.62x51 / .308 Replacement feed mechanism latch lever for HK21 belt-fed platforms chambered in 7.62x51 and .308. Designed to interface with the feed assembly and support proper operation of the HK21 system...
    HKP-00235
    $69.95
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  • Out Of Stock
    New - HKP HK 91/G3 (7.62x51/.308) 20 Round Steel Magazine - Latest HK Production - HKP-00542 HK91, G3 20 Round Steel Magazine - Latest HK Production

    HK91, G3 20 Round Steel Magazine - Latest HK Production

    H&K Heckler & Koch

    $0.00
    HK 91, G3, PTR .308 20 Round All Steel Magazine - German HK HK .308 factory steel 20 round all steel magazine. Each magazine is the latest HK German manufactured. Compatible With: HK 91 HK G3 PTR-91, PTR PDW Vector 51, G3K, HK51, HK51K Century C308...
    HKP-00542
    $0.00
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  • Out Of Stock
    New - H&K MP5 40/10 Magazine Follower - HKP-01635 HK MP5 Magazine Follower - .40 S&W / 10mm

    HK MP5 Magazine Follower - .40 S&W / 10mm

    H&K Heckler & Koch

    $19.95
    H&K MP5 40/10 Magazine Follower   A perfect replacement part for all HK MP5 40/10 magazines.
    HKP-01635
    $19.95
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  • Out Of Stock
    Used - H&K 30 Round MP5 9mm Magazine-Straight - HKP-16263 HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Straight

    HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Straight

    H&K Heckler & Koch

    $0.00
    German H&K MP5 9mm 30 Round Straight Magazine Each original German HK manufactured magazine ranges from VG to like new condition. This is the first production MP5 style of magazine. Each is date coded with factory HK markings. No longer made or...
    HKP-16263
    $0.00
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  • HK CC9 +3 Magazine Extension Kit with Pinky Rest - 9mm HK CC9 +3 Magazine Extension Kit with Pinky Rest - 9mm
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    HK CC9 +3 Magazine Extension Kit with Pinky Rest - 9mm

    HKP HK Parts

    $49.95
    HKP HK CC9 +3 Magazine Extension +3 magazine extension for the HK CC9. This low-profile base pad increases a standard 15-round CC9 magazine to 18 rounds.  Machined in the U.S. from aircraft-grade hard coat anodized aluminum with steel hardware...
    HKP-22476-M
    $49.95
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  • On Sale
    New - HKP HK VP9, VP40 Competition Magwell Extension - Orange - BLEMISHED - HKP-21079-OR-B HK VP9, VP40 Competition Magwell Extension - Orange - BLEMISHED
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    HK VP9, VP40 Competition Magwell Extension - Orange - BLEMISHED

    HKP HK Parts

    Now: $69.95
    Was: $129.95
    HKP HK VP9, VP40 Competition Magwell Extension - Orange - BLEMISHED CONDITION MAY VARY. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Our 2-piece, steel insert...
    HKP-21079-OR-B
    Now: $69.95
    Was: $129.95
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    Now: $69.95
    Was: $129.95
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  • HK CC9 Magazine Locking Plate - 10 Round Ext. HK CC9 Magazine Locking Plate - 10 Round Ext.
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    HK CC9 Magazine Locking Plate - 10 Round Ext.

    H&K Heckler & Koch

    $5.95
    H&K CC9 Magazine Locking Plate - 10 Round Ext. Factory German HK magazine locking plate for use with the HK CC9 +10 round magazine extension. Secures the extended baseplate to the magazine body. Compatible With: HK CC9
    HKP-22154
    $5.95
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