This is a new MARS-L complete lower receiver.
This lower receiver (part M7SL) is designed with several unique LMT features to further enhance its durability and versatility. These features are: Two-stage trigger group, (part LMP2400EUS) winter trigger guard (part LMP109AE), ergo grip, QD endplate (part L7A2DERRR) , and SOPMOD buttstock (part L7LA2BA).
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