Heckler & Koch MR556 Proofed Complete Bolt Carrier Group
$38.66
$71.52
Heckler & Koch MR556 Proofed Complete Bolt Carrier Group A genuine German and OEM replacement bolt carrier group for use in your MR556. Compatible with MR556 rifles. Semi-auto, not compatible for use in machineguns. Click here to browse our entire selection of Bolt Carrier Groups & Parts.
