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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  • On Sale
    Refurbished - HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished - BLEMISHED - HKP-21922-B HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished - BLEMISHED
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    HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished - BLEMISHED

    H&K Heckler & Koch

    Now: $44.95
    Was: $84.95
    HK G3/91 (7.62x51/.308) 15 Round Steel Magazine - Refinished - BLEMISHED MAGAZINE BODIES HAVE PITTING - CONDITION MAY VARY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES...
    HKP-21922-B
    Now: $44.95
    Was: $84.95
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  • New - H&K HK 417/MR762 Magazine Catch Retainer Ring - HKP-16521 HK417, MR762 Magazine Catch Retainer Ring
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    HK417, MR762 Magazine Catch Retainer Ring

    H&K Heckler & Koch

    $10.95
    H&K HK 417/MR762 Magazine Catch Retainer Ring   Compatible With: HK 417 HK MR762
    HKP-16521
    $10.95
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    $10.95
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  • New - B&T Magazine Slim Bumper Upgrade Kit - HKP-21712 B&T APC9/TP9/SPC9 Magazine Slim Bumper Upgrade Kit
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    B&T APC9/TP9/SPC9 Magazine Slim Bumper Upgrade Kit

    B&T Brugger & Thomet

    $20.00
    B&T Magazine Slim Bumper Upgrade Kit This magazine upgrade kit enhances the durability of your 9mm magazines, providing extra protection for the base. The kit features a two-piece base plate that reinforces the bottom of the magazine, covered with a...
    HKP-21712
    $20.00
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    $20.00
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  • On Sale
    New - HKP HK 416 .22LR Dual Magazine Clamp - Black - BLEMISHED - HKP-21607-BL-B HK416 .22LR Dual Magazine Clamp - Black - BLEMISHED
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    HK416 .22LR Dual Magazine Clamp - Black - BLEMISHED

    HKP HK Parts

    Now: $28.95
    Was: $49.95
    HKP HK416 .22LR Dual Magazine Clamp - Black - BLEMISHED MACHINE FLAWS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Securely hold two HK 416 .22LR magazines...
    HKP-21607-BL-B
    Now: $28.95
    Was: $49.95
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    Now: $28.95
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  • New - HKP HK USP 9mm +10 Magazine Extension - HKP-21382-M HK USP 9mm +10 Magazine Extension
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    HK USP 9mm +10 Magazine Extension

    HKP HK Parts

    $69.95
    Magazine Extension - +10 - HK USP 9mm  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. Ultra...
    HKP-21382-M
    $69.95
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    $69.95
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  • New - B&T 19 Round BT USW-A1 9mm Magazine - Black - HKP-18354 B&T USW-A1 Magazine - 9mm - 19 Round
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    B&T USW-A1 Magazine - 9mm - 19 Round

    B&T Brugger & Thomet

    $55.00
    B&T 19 Round BT USW-A1 9mm Magazine New Swiss B&T manufactured 19 Round magazine Compatible With: B&T USW-A1 9mm Specifications: Factory new condition 19-round capacity 9mm
    HKP-18354
    $55.00
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    $55.00
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  • New - HKP HK21 Drum Hanger & H&K 100rd Drum - HKP-21633 HK21 Drum Hanger and100rd Drum
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    HK21 Drum Hanger and100rd Drum

    HKP HK Parts

    $435.95
    HKP HK21 Drum Hanger with H&K 100 Round Drum Complete your HK21 or FMP21 build with our HKP drum hanger and H&K original 100-round drum.  Our HK21 drum hanger is precisley machined from 4140 billet steel, heat-treated to 50 Rockwell, and...
    HKP-21633
    $435.95
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    $435.95
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  • On Sale
    New - HKP HK MP5 40/10 Dual Magazine Clamp - HKP-21614-M HK MP5 Dual Magazine Clamp - 10mm, .40 S&W
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    HK MP5 Dual Magazine Clamp - 10mm, .40 S&W

    HKP HK Parts

    Now: $39.96
    Was: $49.95
    HKP HK MP5 40/10 Dual Magazine Clamp The HK Parts MP5 40/10 dual magazine clamp is expertly crafted to fit all 40/10 MP5 polymer magazines. Constructed from durable aluminum and finished with a type 3 hard anodize for enhanced protection and a premium...
    HKP-21614-M
    Now: $39.96
    Was: $49.95
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  • New - HKP HK UMP Floor Plate - Black - HKP-17161 HK UMP Magazine Floorplate
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    HK UMP Magazine Floorplate

    HKP HK Parts

    $7.95
    HKP HK UMP Floorplate Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.
    HKP-17161
    $7.95
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  • New - Magpul 5.56 NATO Mag Assist - 3 Pack - HKP-17320
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    HK 5.56 Magazine Assist - 3 Pack

    Magpul

    $9.95
    ORIGINAL MAGPUL® 5.56 NATO, 3 PACK When installed on the base of a 5.56x45 rifle magazine, the original Magpul provides improved speed and control during high stress, tactical magazine changes. Durable synthetic rubber loop with recessed rough...
    HKP-17320
    $9.95
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    $9.95
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  • HK MP5 Magazine Replacement Parts Kit - 30 Round - 9mm HK MP5 Magazine Replacement Parts Kit - 30 Round - 9mm
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    HK MP5 Magazine Replacement Parts Kit - 30 Round - 9mm

    MKE

    $23.95
    MKE HK MP5 9mm 30 Round Magazine Replacement Parts Kit Replacement magazine parts kit for HK MP5 9mm firearms. Made in Turkey and designed to match factory MP5 specifications. Includes: 30 round magazine spring MP5 magazine follower MP5 magazine floor...
    HKP-99342
    $23.95
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    $23.95
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  • New - B&T 30 Round Magazine Spring - 9mm - HKP-21758
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    MP9, TP9, APC9, GHM9, SPC9 Magazine Spring - 9mm - 30 Round

    B&T Brugger & Thomet

    $6.95
    B&T 30 Round 9mm Magazine Spring  Factory B&T replacement magazine spring for 30 round 9mm magazines. Compatible With: MP9/TP9 APC9 GHM9 SPC9
    HKP-21758
    $6.95
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