13.5" Super Modular Rail MK4 M-LOK Black Color:Black 2 lbs Other Specs *NOTE:

2 lbs Other Specs *NOTE: Due to slight variances in case design over time

you want to reach that proper position the first time

Lights: Compatible with Surefire X300 Family/XH Family

Medical-Grade Polymer

13.5" Super Modular Rail MK4 M-LOK Black Color:Black 2 lbs Other Specs *NOTE:The Super Modular Rail (SMR) MK4 M LOK is Geissele's ultra lightweight M LOK handguard option. These rails are purpose built and feature integrated short M1913 picatinny rail sections at the fore of the rail in the 3, 6, and 9 o'clock positions. Maximum venting for heat dissipation also dramatically reduces the rail's overall weight, while maintaining its same strong and rigid platform. It utilizes Magpul's M LOK technology at the 3, 6, and 9 o'clock