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 Mark 23 Magazine Housing - 10 Round
H&K Heckler & Koch
$49.9510 Round HK Mark 23 Magazine HousingHKP-16647$49.95 -
HK USP, USP Tactical .45 ACP Lockout Device Set
H&K Heckler & Koch
$18.95Heckler and Koch HK USP45, USP45 Tactical Lockout Device Set Factory lockout device set designed for HK USP .45 ACP full-size pistols, including Tactical models. Intended for use in compatible lockout-equipped frames. Compatible With: USP45,...HKP-01503$18.95 -
HK416, MR556 Magazine Locking Plate
H&K Heckler & Koch
$9.95HK German HK MR556 & HK 416 Magazine Locking PlateHKP-13484$9.95 -
Out Of Stock
HK USC Magazine Locking Plate Insert - .45 ACP
H&K Heckler & Koch
$8.95H&K USC (.45 ACP) Magazine Locking Plate InsertHKP-16384$8.95 -
HK23E Ammunition Belt Box - 5.56 / .223 - US
Michaels Machines
$599.95HK23E & MM23E Belt Box Brand new HK23E, MM23E US made feed box. The German units have long since been out of production. These are exact copies of the German units. Made in the USA. Compatible With: MM23E HK23EHKP-17579$599.95 -
On Sale
UZI Magazine Block Plug - 9mm - 32 to 10 Round Conversion - BLEMISHED
HKP HK Parts
Now: $3.95Was: $6.95UZI Magazine Block Plug - 9mm - 32 to 10 Round Conversion - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. UZI mag block plug. This is designed to...HKP-18684-BNow: $3.95Was: $6.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - OD Green - BLEMISHED
H&K Heckler & Koch
Now: $63.95Was: $85.95HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - OD Green - BLEMISHED SHADE OF GREEN MAY VARY FROM PICTURED UNIT COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL...HKP-19979-ODG-BNow: $63.95Was: $85.95 -
On Sale
AR-15 Magazine - PMAG - 5.56 and .223 - 30 Round - BLEMISHED
Magpul
Now: $8.95Was: $14.95AR-15 Magazine - PMAG - 5.56 and .223 - 30 Round - BLEMISHED INSTALLATION MARKINGS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Magpul GEN 2 AR/M4 30-round...HKP-14559-BNow: $8.95Was: $14.95 -
On Sale
HK P2000 Magazine Extension Kit - +7 - Red - BLEMISHED
HKP HK Parts
Now: $44.95Was: $64.99HK P2000 Magazine Extension Kit - +7 - Red - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This listing is for...HKP-21527-RED-BNow: $44.95Was: $64.99 -
HK45 Compact, HK USP45 Compact Magazine - Complete - 18 Round
HKP HK Parts / Heckler & Koch
$79.95Heckler and Koch, HKP 18 Round Magazine for HK45 Compact, HK USP45 Compact Complete 18-round magazine assembled using a factory Heckler and Koch magazine body combined with an HKP magazine extension. This configuration increases capacity while...HKP-22520$79.95 -
HK21 Cylinder Head Screw - Belt Inlet
H&K Heckler & Koch
$5.95HK21 Cylinder Head Screw - Belt Inlet Replacement cylinder head screw for the HK21 belt inlet assembly, manufactured to original specifications. Ensures proper fit, secure retention, and reliable feeding operation. Compatible With: HK21 THIS CLOSEOUT...HKP-99412$5.95 -
On Sale
Glock 17 Magazine Extension Kit - 9mm - +6 Round - Blue - BLEMISHED
HKP HK Parts
Now: $18.95Was: $34.95HKP Glock 17 - +6 Round 9mm Magazine Extension Kit - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Designed to fit all of the Glock 17 models...HKP-18348-BU-BNow: $18.95Was: $34.95