I didn't want to post this picture before from Hunnicutt's Bradley in case it pre-empted Weaver's work. Nothing is new under the sun?
No worries - I'd have been amazed if it
hadn't been proposed for real, given the Scorpion-turreted MRV and the Fox/FV432.
Always thought this turret looked like a good idea. Yes I know this isn't an M113, but it could easily go on one and would be an ideal, minimum space increase replacement for an M2HB cupola:
The Netherlands put a different turret with the same gun (25mm Oerlikon KBA) on their YPR-765 (AIFV)s:
Lastly, here's an AIFV (Turkish?) with a different turret, the French Dragar: