The best 37/40mm stand alone currently
B&T GL06, I have both the 37mm barrel and 40mm barrel until I can buy a second GL06
B&T GL06, I have both the 37mm barrel and 40mm barrel until I can buy a second GL06
B&T GL06, I have both the 37mm barrel and 40mm barrel until I can buy a second GL06
B&T GL06, I have both the 37mm barrel and 40mm barrel until I can buy a second GL06