Is there a source for full-auto spec .45 barrels these days? All I see are semi-auto spec barrels. I'm interested in a .45 bolt, but it doesn't do me much good without the barrel to go with it.
Also, does anyone know what the issue is with the Promags? If they don't operate well at full capacity, sounds like the spring could be the problem. I wonder if a stronger spring could be sourced from somewhere else and crammed in there?
As with any mags - most notable surplus, but sometimes new - sometimes everything is not cleaned up inside after manufacture.
I took my promags apart, used solvent and a stiff brush, and completely cleaned them inside. Then Tri-Flow (worked beautifully on everything I used it on while serving with 2AD), then reassembled.
I did not notice any issue with spring tension, but I assume a high-reliability spring kit might be a good thing if someone made them.
Probably not a deep enough market. While I've taken a mandrel and custom wound a spring (old Bill Holmes follower), I have zero interest in doing so these days. Since the body is narrowed towards the feed lips, not gonna take an Uzi 9x32 spring and get it to work either. But by all means take the internal measurements and see if there's some spring that would work!
Note: I don't shoot full auto, and my promags are range and training mags, not for EDC or some serious purpose. YMMV. (smile)
PS: I bought three Uzi Pro 16inch barrels from BX. INCREDIBLY happy with them! Highly recommend his work!