HK MR556/416 Bolt Carrier Groups

HK 416, Firing Pin Retaining Pin- New StyleThis pin is a common wear and replacement item on any AR-15 or M16 system as well as the HK416. Not needed on the MR556 models. This is the newer style pin that is goldish in color, super hardened and much less...

HK MR556 & 416 Bolt CatchNew HK German manufacture. Fits and works with factory HK MR556 & HK 416 models. HK 416 HK MR556

Bolt Head Cam Pin- MR556, HK 416New factory HK German manufactured cam pin for bolt group. A common wear and replacement item. A great idea to have a couple on hand.Fits all: HK 416 HK MR556 HK M27 HK 416 A5

HK MR556 & HK 416 Bolt Catch PinThe factory roll pin to hold the bolt catch in place. Great to have on hand in the event this item becomes lost or damaged when doing maintenance.

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 416 MR556 M27 HK 416 A5  

HK416C Complete Upper Kit - 9"  After years trying to get these back in. We finally bring you a rare unicorn of a find. With our complete 416c upper kit all that would be needed to complete this kit would be a mil-spec lower or a STS 416c lower...

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

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

HK 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.

Ejection Door Lock Bolt PinHK 416 HK MR556

HK 416, MR556, MR762, HK 417 Bolt Catch SpringNew HK German manufacture fits all: HK MR556 HK 416 MR 762 HK 417

New HK Factory German MR556 Upper Kit with M-Lok forearm HK MR556 Upper kit 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...

HK MR556 & HK 416 Bolt Catch Plunger

HK 416, MR556 Spring Lock BoltHK German MR556, HK 416 Spring Lock

HK MR556 Complete Bolt Group HK's MR556 bolt group includes the following HK German factory parts: MR556 Bolt Carrier Bolt head complete Firing pin spring Firing pin Cam pin All misc parts that comprise a complete bolt group Bolt carriers will be...

German HK marked MR556 & HK 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...

HK 416, MR556 Extractor Spring BufferThis buffer fits inside the extractor spring in the extactor pocked of the bolt. This item is a high wear item and a spare would be highly advised.Fits all HK MR556 & HK416 Firearms.

HK 416, MR556 Roll Pin for Pin Catch. This roll pin is used in the bolt carrier to secure the catch.

MR556 & HK416 Upper Conversion Kit - 8" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 8" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...

HK 416 Bolt Group Complete - German New HK German 416 Bolt group. Rare component as the HK bolt groups are now considered EUC items and are not for sale from HK Germany.  Each unit is factory fresh with all of the OTB upgrades. Includes: HK 416 F/A...

New HK German MR556, Bolt Head CompleteBrand new factory German bolt head with all the components to make the bolt head complete. HK MR556

MR556 & HK416 Upper Conversion Kit - 14.5"Finally an answer for all of those that have been wanting a 14.5" upper for an HK416 or MR556. This conversion kit adds an upper or a barrel option for your MR556, CR556 & HK 416's. Each upgrade kit is...

MR556 & HK416 Upper Conversion Kit - 9" - HK 416C StyleFinally an answer for all of those that have been wanting as close to the origional, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...

US Made Un-Assembled Stripped HK 416, MR556 Style - Upper Receiver New US made HK416/MR556 style upper receiver.  Compatible With: HK MR556 HK MR223 HK 416*** Need a matching lower for your build?  STS416 A5 LOWER - Specialized Tactical...

MR556 & HK416 Upper Conversion Kit - 9" - HK 416C StyleFinally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...