KM4 SR Free Float Rail Base Ring Assembly (Part 537S) VFC and most other AR AEG's

and most other AR AEG's

Front side access zippered pocket

increasing reliability and replica performance

Compatibility – M4 Lower Receivers

Overall dimension: 5"H x 7

KM4 SR Free Float Rail Base Ring Assembly (Part 537S) VFC and most other AR AEG'sThe SR free float rail base ring assembly contains everything you need to attach the KWA SR rails to your KM4 AEG. In this brand new package, you can customize your KM4 to fit your own style of play, whether its with the SR7, SR10, or SR12 free float rails (sold separately). Pick up a kit at this special price while they last! Contents: 1x Free Float Rail Base, Part 537 1x Free Float Rail Barrel Ring, Part 538 1x Free Float Rail Knurled Handguard