The Super Modular Rail MK4 M-LOK is Geissele's ultra rugged MLOK option. These rails are purpose built and feature integrated M1913 Picatinny rail sections at the fore of the rail in the 3, 6 and 9 o'clock positions. The SMR MK4 is both versatile and modular, allowing users to tailor the platform to their unique needs.
 
Available in Black, DDC and ODG anodized hard coats.