front strap marking 4.G.G.M.G.20.

[CorporalGungee]

I'm not sure if the frame is a commercial or Navy ; but in any case where it is cut for the grip safety I'd have to say it's a '06 frame . Where it was a military arsenal rework modification , this really throws my head in a lope . In any case there is no stock lug and it's a short frame .