At first I was reading "loner gun" and conjuring up images of a hermit living under a bridge fondling a SR-22. And then my inner grammar nazi piped up "He means loaner you idiot, read the rest of the sentence!"
The MFT stock is sweet! It a super tight fight. No play at all. Even tighter than my milspec Hogue 6-pos stock, and that thing was a honeymoon fit for sure. I was torn about getting black...the best part about black is that it would have been interchangeable with other builds.
I could swap a cut HG & rails for an unmolested one, but honestly, it's really easy to do! A new hacksaw blade and a vice, and then use some masking tape to guide the cut. If you screw it up, just cut it again a little closer to the HG nut.
The BX1 to the "AR" mag was a bit more bubba. It's a $10 (cheapest airsoft mag I could find) I cut maybe an inch off the to of the AR, filed the bottom of the BX1 flat, and filled the AR mag with plastic tube. Packed in a 1/4 tube of JB weld, clamped it, and wiped off the excess spooge. Let dry overnight and finish sanded the exposed JB. Keep meaning to paint the mag. I'm going to do the same with a BX1 and a Uzi or HK style mag.