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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HK USP, Mark 23 Magazine Extension Kit - .45 - +7
HKP HK Parts
$59.95HKP HK USP .45/MK23 - Magazine Extension Kit +7 HKP highly recommends using a magazine loader when loading ammunition into our extended magazines due to increased spring tension versus factory. Includes: +7 magazine extension Extra power enhanced...HKP-21513-M$59.95 -
HK USP Full Size Floorplate - 9mm and .40 S&W
H&K Heckler & Koch
$8.95HK USP Full Size 9mm/.40 S&W Floor Plate Compatible With: HK USP 9mm 15-Round Magazine HK USP 40 S&W 13-Round MagazineHKP-01438$8.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Magazine Catch Spring
H&K Heckler & Koch
$9.95HK MR556, HK 416 & MR762 & 417 Magazine Catch Spring HK German manufacture. Compatible With: HK MR556 HK 416, M27 HK MR762 HK 417, G28 AR15, M4 & M16 firearmsHKP-02620$9.95 -
HK91, G3, PTR Magazine - 10 Round - Steel
H&K Heckler & Koch
$73.9510 Round Magazine - Steel This part counts as 1 US-made part for 922r compliance for HK rifles. This magazine was made by Heckler and Koch and converted to ten rounds in the United States using the US-made floorplate. Compatible With: HK91 HK G3 HK...HKP-01607$73.95 -
HK 45C, USPC Magazine Extension - 12 Round - Red
HKP HK Parts
$84.95HKP 12 Round HK 45C, HK USPC .45 ACP Magazine - Red HK Parts magazine extension +4 adds 4 additional rounds to the HK45C, 8 round magazine. Each unit is then fully assembled as a 12 round HK45C magazine. Ideal for competitive shooters, concealed carry or...HKP-18673$84.95 -
HK VP9, VP40, P30, USPC, P2000 Mag Pouch - Single
Comp-Tac
$38.95Comp-Tac HK VP9/VP40/P30/USPC/P2000 Single Mag Pouch The Comp-Tac single magazine pouch is an outside the waistband holder to carry a spare magazine for competition, concealed carry or general use. The Comp-Tac single magazine pouch provides a rigid...HKP-17498$38.95 -
HK416, MR556 Dual Magazine Clamp
HKP HK Parts
$49.95HKP HK MR556/416 Dual Magazine Clamp Securely hold two HK Maritime 416 magazines together for fast mag swaps. Precision-machined from billet aluminum and cerakoted in the popular RAL8000 or classic black, our dual mag clamp is a must for those...HKP-21553-M$49.95 -
HK UMP Magazine - 30 Round - 9mm
H&K Heckler & Koch
$62.95HK Heckler and Koch German 9mm 30 Round Factory Magazine for HK UMP The latest HK German production 30-round magazine is new and hard to find. Compatible With: UMP 9mm USC 9mm conversions Omega 9mm UMP, USC buildsHKP-00608$62.95 -
HK CC9 Magazine - 9mm - 10 Round - Flat Floorplate
H&K Heckler & Koch
$49.95H&K HK CC9 10 Round Magazine - Flat Floor PlateHKP-21570$49.95 -
On Sale
Sig P365 +3 Magazine Extension
Tactical Precision MFG
Now: $18.71Was: $44.95TPM Sig P365 +3 Magazine Extension This extension is made from machined 6061 Aluminum. This magazine extension will increase capacity, increase reload speed and mag drops, and overall functionality of your pistol. Available in various colors to customize...HKP-21278-MNow: $18.71Was: $44.95 -
HK MP5 Magazine Spring - .40 S&W, 10mm - 30 Round
HKP HK Parts
$4.95HKP MP5 40/10 30 Round Magazine SpringHKP-16509$4.95 -
Out Of Stock
HK MP5, MP5K, SP5, SP5K Magazine Loader
B&T Brugger & Thomet
$24.00B&T Brugger and Thomet Magazine Loader for HK MP5, MP5K and HK SP5, HK SP5K The world’s fastest magazine loader. The B&T magazine loader loads your MP5 magazines directly from the ammo box tray into the magazine in a fraction of the time...HKP-21687$24.00