I got a SLR-101 receiver that is set up for single stack mags, it doesn't look hard. Is there anything to special to do to it besides the obivious to get it to accept high capacity magazines? I also have to turn down the barrel in my kit because the origional owner had the receiver machined to use a pressed in barrel. Another question where can I get the lower tang for the receiver? Thanks in advance for any help.

It looks as though it is machined to feed from both sides, comparing it to pictures I have seen. Does anyone have any good quality pictures they could send me of the mag well and feed ramps to compare them?