HK MR556 & MR762 Rail Segment – MRS 5 slot Rail ASM
New Factory HK 5 slot rail segment for the MRS style HKey mod rail forearms.
***Not compatible with the Euro spec HKey “Small”, this is for the Modular Rail System “Large type” HKey spec, which is offered here in the US market.
Compatible With:
- HK MR556 (with HKey handguard installed)
- HK MR762 (with HKey handguard installed)
We also offer different length “HKey” rail sections below!
