I had posted earlier that I tried that (the tube started to crack when I reflanged the sides for the baseplate tabs) but I haven’t seen anything truly flush fit yet. Pictures?
It’s my understanding the tube of the 15 is the same length (or very slightly shorter) as the 17; the difference is the angle of the baseplate. I want the baseplate to not extend past the bottom of the Macro blackstraps, or, if not possible, the flat 226 plate is sufficiently short that I would be happy if it was flush.
Attachment 114533
Eta: pic from sigtalk - 17 on L. Tubes the same length