HK416 / MR556 Bolt Carrier Groups

H&K HK MR556/416 Roll Pin for Catch On Bolt Carrier This roll pin is used in the bolt carrier to secure the catch. Compatible With: HK MR556 HK 416

HK MR556 & 416 Extractor Axle Pin This factory HK German part holds the extractor in place on the bolt head. This item needs to be changed each time it is removed per HK. Compatible With: HK MR556 HK 416 M27 HK 416 A5  

New HK Factory German MR556 Upper Kit with M-LOK forearm Includes: Complete MR556 upper receiver with M-LOK forearm MR556 Bolt group Complete Tungsten Filled HK Buffer HK Buffer Spring One 30 Round HK Steel Maritime Magazine No FFL required as the...

H&K HK MR556/416 Ejector Retaining Pin This factory HK German part is the pin that holds the ejector in place on the bolt head. Great to have as a spare part. Compatible With: HK MR556 HK 416

H&K HK MR556/416 Factory Bolt Carrier With The Newer Style Bolt Retaining Key  This is the factory one-piece carrier that has the out-of-battery disconnect and the bolt retaining latch assemblies installed to make up the HK MR556 (556...

HKP HK MR556/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 & HK416 Firearms

H&K HK MR556/416 Ejector For Bolt Head HK German factory part.  Compatible With: HK MR556 HK 416

HK MR556/416 Firing Pin Catch   Compatible With: HK MR556 HK 416  

HK 416 & MR556 Bolt Head Extractor New HK - German Compatible With: HK MR556 HK 416 CR556 HK M27  

Firing Pin for HK 416 & MR556 Firearm - USA - GSG9 US made HK 416 & MR556 Made from hardened stainless steel. Compatible With: HK416 HK MR556 HK CR556 HK M27

HK 416 & MR556 Ejector Spring Compatible With: MR556 HK 416

H&K HK 417/MR556/416/MR776 Pin Look Index   Compatible With: HK MR556 HK 417 HK MR556