Geissele Automatics MK4 "Federal" 10" Handguard / Rail Assembly with Stripped Upper Receiver (PN 05-430)
This Geissele Automatics combo pairs a MK4 "Federal" 10" handguard with an AR-15 stripped upper receiver. The handguard features M-LOK slotting along the flats with a full-length top Picatinny rail and additional integrated Picatinny sections toward the front of the rail.
The upper receiver is a flat-top style receiver with forward assist and ejection port cover installed.