Hello Ladies and Gents:
I'm trying to locate a very retro DTA Mil-Brake for a 1980's-era XM177E2 accessory. I'm looking for the type on the far left in this picture; the one with slots around its full diameter. I'll call that one an "A1 style". I have a mint condition "A2 style" DTA brake like the two in the middle of the pic. (sans locknut), but really want an A1. Any ideas on where to find one of these gems, with or without the locknut? I'd appreciate any and all leads on locating one. Here's the pic of what I'm rambling on and on about: DTA Mil-Brake Goodness!
ETA: This is a "borrowed" pic. I wish I could credit its owner, especially since they are most likely a member here, but I don't remember who they are.