I compared my butler creek to a BX-25 and noticed the rear of the feed lip is squared on the butler creek, and rounded on the BX-25. After using a flat file to round the back of the butler creek lip, I have had few, if any, problems. The only other issue I've found is with the fitment of the butler creek mag. It wiggles a bit in the socket, unlike the BX-25. I usually find that pushing the bottom of the mag slightly forward before the first round fires takes care of it.
Directly from their website; "Shell deflector included allowing for full ambidextrous use." Still ejects on the right, but might be worth a second look!