yes it is a 4.6 and yes you can mount a light. In theory it will have more recoil but most people would never be able to tell the difference in felt recoil

Joshua, yes Sir, 4.6 inch barrel and being lighter than the 41will have slightly sharper recoil. No issue with weapons light or laser mounting. Cheers and stay safe!

Yes you are correct, barrel length is 4.6, overall length 8.03, weight loaded 36.2 ozs, weight unloaded 29.2 ozs, trigger pull 5.5lbs. yes this has an accessories Rail to mount a light. Lastly yes since its a little smaller than the 41 it will have a little more recoil but its not small enough recoil should be an issue. Hope this helps.