My brother ' s fatherinlaw gave him this . He doesn ' t know where he got it or where it is from . He thought it was the base to some kind of projectile but given the machined holes in the side I think it looks more like a flash suppressor . The only markings on it are BW on the fins . Any help is greatly appreciated ! <| sep |> I ' m sorry about your loss and know that people are here to support you . It ' s never easy to lose a furry pet . I lose my parrotlet about 6 months ago and it still hurts . It ' ll hit you in waves , but at the end of the day , you did the right thing that you didn ' t let him suffer . I ' m sure he will forever be grateful to you for everything you did and gave him in the past 15 years . To cope with the grief and pain , I started to donate money in honor of my birdGizmo when birds and their owners visit the vet and are in financial need . Perhaps , you can do the same . It has made me feel better . May Checkers rest in peace .