:) Hi, I am a newbie to night vision .I have been told by other members to re-build my old Ultrafire 501B - and to build a drop in. a Oslon Black emitter and a Ahorton spherical?? lens. I know this this description is wrong-Help It is for air gun DaystateM4/Nikko stirling 30Dia. scope. 30 to 55-60/1...