Bought a BCA side charging upper on a whim. Wanted to try a 6.5 Grendel, was only $200.
So far, so good. Not as accurate as my high end ARs, but didn’t expect it to be. No feeding issues, really like the side charging feature. Running suppressed, it does have some back pressure. Nothing unpleasant, but there is a little excess exhaust though the ejection port