New From HK Germany the slim line
retractable stock fits all commercial & milspec AR-15/M16 buffer tubes. Marked with the HK logo and issued on specialized HK 416, MR556 rifles.
Fits all AR15/M4,M16’s & HK 416, MR556 that have the commercial & milspec buffer tube installed.
Will fit all HK MR556 rifles and is a drop on item with no issues.