All SLR Handguards are Type III Class 2 BLACK Hardcoat Anodized

Solo Mid Handguards have a full top rail (continuous).

Low profile 3 slot picatinny built in rails up front at  3 and 9 o'clock

Bottom is full KeyMod or MLOK

All SLR KeyMod's double as built in QD swivel mounts (QMod)