thats nubs the barrel adapter. if you installed your flatline yourself then you know you have to remove the original one to put the flatline it. to get it tight back in your gun so it doesnt come out, tighten the 3 allen screws near your front sight. hope this helped. oh and also great reveiw =)
Is that a left handed version?
ryoken21 9 months ago
thats nubs the barrel adapter. if you installed your flatline yourself then you know you have to remove the original one to put the flatline it. to get it tight back in your gun so it doesnt come out, tighten the 3 allen screws near your front sight. hope this helped. oh and also great reveiw =)
bmxdude567 1 year ago