If weight is a concern, get an Olight Valkyrie pistol light, flip it upside down and set it on top of the rail with a fixed front sight behind it to protect the buttons.Temporary change until I build my VLTOR lower...
Just that Olight made the Mega upper front heavy, might go with a Surefire or Streamlight in the future with some kinda light mount, maybe even canted. (Should be lighter!) get it? Lighter...
RDS the VLTOR upper at that time, and slap the Burris back on the Mega.
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Or put the same Valkyrie on the far right side of the rail it it’s not a carry gun.