WTS my adapter. Legitimately in brand new condition. Only fielded once and I didn't really like having the M4 mags there while I played. Feeds just fine, and M4 mags click in nice and stay in nice. Price is SHIPPED. PayPal only, and I will ship out hopefully same day, if not next day. USPS Priority Mail! Comes with extra single-stack mod inserts in case the one inside breaks in the future. I can give more pictures upon request! Thanks for looking!