HK MR762/417 Receivers/Uppers

H&K HK MR556, MR762, 416, & 417 Complete Piston Rod Assembly  A great replacement or spare to keep on hand. Compatible With: HK MR556 HK 416 HK 416 A5 MR762 HK 417 Please Note: Does not fit barrels less than 10 inches.

HK MR556 & MR762 Take Down Tool For The Upper & Lower Receiver This part is the tool used to tighten down the stock movement on the E1/E2 stock. Each tool will be stored in the rear of the E1/E2 stock. Please Note: We get...

HK MR556 Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and improve...

H&K HK MR762 Lower Receiver Front Locking Pin - Black This is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and...

MR762, HK417 Complete Buffer Specifications: Weight: 6.1 Oz Overall length: 3.20" OD: 1.18"

HK MR762, G28 & HK 417 End Plate or locking plate for Receiver  New HK German factory. Compatible With: HK MR762 HK 417 HK G28

B&T Picatinny Rail-Mount Brass Catcher This B&T brass catcher is quick and easy to install on to your factory picatinny mount equipped handguard.  If your handguard does not have a picatinny rail to mount the brass catcher, you can simply...

HK German 417 Assaulter 12" Parts Kit - Unfired The ultimate HK unicorn. Have you ever seen one let along seen a brand new German UNFIRED HK417 Assaulter parts kit with EVERY single part with the exception of the actual stripped lower? This is the...

HK MR762, HK 417 Incomplete Upper Receiver This stripped upper receiver includes the insalled threaded piston guide bushing.

HK Factory German HK 417 Brass Catcher This factory H&K brass catcher is quick and easy to install on to your factory picatinny mount equipped handguard.  If your handguard does not have a picatinny rail to mount the brass catcher, you can...