M-LOK Poly Rail Section 7 Slots Mossberg 500/590 with Magpul SGA Stock w/ receiver extension ~14

w/ receiver extension ~14

This high quality bolt carrier group is a valuable addition to your 6

the SD-3G has a shortened pull length and a lightning-quick reset to give it a unique

while maintaining its same strong and rigid platform

M-LOK Poly Rail Section 7 Slots Mossberg 500/590 with Magpul SGA Stock w/ receiver extension ~14Product Details Designed for use with all M LOK compatible Hand Guards and Forends, M LOK Polymer Rail Sections provide a cost effective method of attaching various 1913 Picatinny spec rail mounted accessories such as lights and vertical grips. Includes 7 usable slots and a maximum overall length of 3. 3 in. Injection molded from a proprietary reinforced composite for enhanced strength and durability, our M LOK Polymer Rail Sections are light weight