HK Parts
HK Parts is the industry’s premier source for Heckler & Koch parts and accessories, trusted by professionals, enthusiasts, and collectors worldwide. We specialize in genuine HK components as well as precisionengineered aftermarket solutions that meet the same uncompromising standards of performance, reliability, and authenticity. With one of the largest in-stock selections anywhere, deep technical expertise, and a reputation built on quality and trust, HKParts has become the definitive destination for those who demand the best from their firearms.
56 indexed components
Foregrip
View All (3)
Handguard or rails
View All (1)
Magazine
View All (7)
H&K HK416 MR556 Maritime 30-Round Steel Magazine 5.56mm
$94.95
HKP Glock 19 Magazine Parts Replacement Kit 9-Round Spring & Plates
$15.95
HKP HK Parts HK UMP Magazine .45 ACP 25rd Polymer w/ Steel Feed Lips
$47.99
HKP HK Parts UMP 9mm 30-Round Magazine for UMP/USC-UMP
$49.95
HKP HK UMP .40 S&W 30-Round Magazine (UMP/USC 40 Cal)
$49.95
HK UMP .45 ACP 15-Round Magazine (UMP/USC .45)
$49.95
KCI Glock Magazine 26-Round .45 ACP Polymer Steel-Lined, Black
$22.95
Maintenance & Cleaning
View All (6)HKP Armorer's Tool Kit HK Parts Puck Punch Bench Block & Punch/Gauge Set
$67.95
HK Parts HKP HK416 MR556 Buffer Tube Wrench Castle Nut Tool
$29.95
HKP HK416/MR556 Barrel Nut Installation Tool for 1/2 in Torque Wrench
$59.95
HKP HK MP5SD Barrel Port Cleaning Brush (HKP-20989)
$69.95
HKP MP5SD Barrel Port Brush Handle for MP5/MP5SD (HKP-21448-M)
$39.95
HKP MP5SD Barrel Port Cleaning Brush Replacement Cartridge (9mm)
$38.75
Miscellaneous Parts
View All (15)
HKP Enhanced MP5SD Sealing Ring for SD Suppressor Gasket, Black Rubber
$9.95
HKP Gen 1 Roller Retainer Spring Upgrade for HK 9mm Bolt Heads (MP5, HK91)
$9.95
HKP HK416 MR556 Extractor Spring Buffer (HKP-21604)
$5.39
HKP HK53 Cocking Tube 5.56/.223 Steel 7.87in
$139.95
HKP HK Parts Bolt Head Locking Roller +5 8.05mm
$8.99
HKP HK Parts HK416/MR556/HK417/MR762 Handguard Locking Screw (Stainless, 5mm Hex)
$9.95
HKP HK Parts HK UMP Lower Locking Pin Push Pin
$12.95
HKP HK Parts Screw Set for Rail Mount Compensator 2-Pack
$4.95
HKP HK Rear Sight Oval Washer for Diopter Rear Sight Assemblies
$2.95
HKP HK UMP .45 ACP Magazine Block Plug 25 to 10 Round Conversion
$9.95
Muzzle Device
View All (5)
HK Parts HKP Threaded Muzzle Brake Compensator 15x1 RH for 5.56/.223 and 7.62/.308
$29.95
HKP Glock 17 Gen 4 Rail Mount Compensator (Black) with Picatinny Rail
$179.95
HKP HK416/G3 Flash Hider Threaded 15x1 RH (CA/NY Compliant)
$24.95
HKP HK Linear Compensator 5/8x24 RH for 5.56/.223 and .308 (Black)
$149.95
Recoil Reduction Device 2 Port Compensator Keymount
$99.95
