HK416 / MR566 Small Parts
Our selection includes every essential small part for your HK MR556 or HK416 rifle – pins, springs, detents, gas rings, firing pins, and more.
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On Sale
HK MR556, MR762 A4 Disconnector
H&K Heckler & Koch
Now: $17.05Was: $18.95H&K MR556/MR762 A4 Disconnector Factory H&K disconnector for use in MR556 A4 and MR762 A4 platforms. Compatible With: HK MR556 A1/A4 HK MR762 A1/A4Now: $17.05Was: $18.95 -
On Sale
HK MR556 A4 Hammer - Incomplete - Semi-Auto
H&K Heckler & Koch
Now: $39.56Was: $43.95Heckler and Koch Hammer for HK MR556 Semi-Auto rifles Factory-original German steel hammer for MR556 A4 rifles. Designed as a direct replacement for worn or damaged hammers in MR556 A1 and A4 trigger assemblies. Compatible With: MR556A1 MR556...Now: $39.56Was: $43.95 -
On Sale
HK MR556 A4/416 A5 Gas Block Spring
H&K Heckler & Koch
Now: $17.95Was: $19.95H&K MR556 A4/416 A5 Gas Block Spring German-made gas block spring for the MR556 A4 and HK416 A5. Compatible With: HK MR556 A4 HK416 A5Now: $17.95Was: $19.95 -
On Sale
HK416 A5, MR556 A4 Gas Vent Screw - 2.4mm
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K MR556 A4/416 A5 2.4mm Gas Vent Screw German 2.4mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4Now: $26.95Was: $29.95 -
On Sale
HK416, MR556 Catch - Firing Pin - Titanium
HKP HK Parts
Now: $39.96Was: $49.95HK MR556 & HK416 Firing Pin - TitaniumGrade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK MR556 & HK 416 weapon system. Get the...Now: $39.96Was: $49.95 -
On Sale
HK416 A5, MR556 A4 Gas Vent Screw - 1.4mm
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K MR556 A4/416 A5 1.4mm Gas Vent Screw German 1.4mm gas vent screw for MR556 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4Now: $26.95Was: $29.95 -
On Sale
HK416 A5 Front Sight Adapter
H&K Heckler & Koch
Now: $88.16Was: $97.95H&K HK416 A5 Front Sight Adapter Designed for secure and precise installation of factory-style front sights. Compatible With: HK 416Now: $88.16Was: $97.95 -
On Sale
HK416 A5, MR556 A4 Gas Vent Screw - 1.0mm
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K MR556 A4/416 A5 1.0mm Gas Vent Screw German 1.0mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5Now: $26.95Was: $29.95 -
Out Of StockOn Sale
HK416 & HK MR556 Assembly Wrench Tool
H&K Heckler & Koch
Now: $629.96Was: $699.95H&K HK 416 & HK MR556 Assembly Wrench Tool Factory HK German multi-tool for the HK416 and MR556. The perfect tool for a complete breakdown.Now: $629.96Was: $699.95 -
On Sale
HK416, HK417, MR556, MR762 Cylindrical Screw
H&K Heckler & Koch
Now: $17.95Was: $19.95Heckler and Koch Cylindrical Screw for MR762, HK417, MR556, HK416 Factory replacement cylindrical lens-head Allen screw for maintaining or repairing your HK417 and MR556 rifles with original-spec hardware. Compatible With: HK417, MR762 HK416, MR556Now: $17.95Was: $19.95 -
On Sale
HK416 A5, MR556 A4 Gas Vent Screw - 1.3mm
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K MR556 A4/416 A5 1.3mm Gas Vent Screw The 1.3mm gas vent screw is the standard size installed at the factory on the MR556 A4. Compatible With: HK MR556 A4Now: $26.95Was: $29.95 -
On Sale
HK416 A5, MR556 A4 Gas Vent Screw - 1.2mm
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K MR556 A4/416 A5 1.2mm Gas Vent Screw German 1.2mm gas vent screw for MR556 A4. Provides less venting than the factory-installed 1.3mm screw. Compatible With: HK MR556 A4 HK416 A5Now: $26.95Was: $29.95