Helping a buddy do some research on NV to mount in front of his NXS 5.5-22x56 on a 300Wm. Looking at the TNVC AN/PVS27, & Armasight CO-LR Gen3P. Also the TNVC AN/PVS22 UNS, & ATN PS-40-4, but can't seem to find a recoil rating on the last two. Any insight is appreciated. Which one would be the best choice for a <$6K budget? Thanks.