I'm looing to spend around 100 for a red dot i'm wanting one whith a 2moa dot been looking at this one
ROMEO-MSR
But im still trying to deside would the 20mm tube work good or do I need to go with a 25mm tube I now 20mm to 25mm isnt much diffrance just cant deside.Give me some advice or info. Thanks for everyones time also.