AR20 Quick fill
Just to add to this, I know of two that have been modified. One by 'Jon' (on StB) and the other by Shawn Hill at ISP Air rifles in Bloxwhich ('Spartan' on StB).
Both said it was a horrible job, but the results were good. Sorry to add that Jon has so much work, I would not ask him this year.
EV2 Mk3+Sightron SIII 10-50 x 60 LRIRMOA / Bushnell 8-32
Theoben Rapid 12 FAC
GROWING OLD IS NOT FOR SISSIES