Hard to find is this Sig p556 swat that has a really rare sig diopter rear sight, a sig Romeo red dot, dead air keymo flash hider, cmmg 1913 picatinny adapter with sig brace. Has some some marks on the side from spent casings. Common issue with these. I have the box for this as well. I also have a sig telescoping stock i can throw in. Trade plus cash. Maybe looking for another pistol. Let me know.
