The IMI Defense Lightweight tactical 2 pieces Drop-In quad rail set, machined from hardened aircraft aluminum, Mil-Std Hard Anodize finish, perfectly tight fit, ultra-slim cross-section, with continuous 12 O’clock rail and full T-marked 1913 picatinny rails at 3, 6 & 9 O’clock and 5 QD sling swivel ports.

IMI Defense Aluminium Quad Rail Mid Length Drop In for M4 / M16
Aluminum Construction
All sharp edges removed
Finished in MIL-SPEC hard coat anodizing.
Full free-floating barrel design
Connects by tightening on the mil-spec barrel nut
Continuous upper rail
2 piece design
5 QD sling mount ports, 2 on each side plus 1 on the front of the bottom rail
Ultra slim – Only 2.22″ wide
Overall length: 8.40″.
No gunsmith required