if bar was banned from spar, no i wouldnt argue that.
just like i dont argue chem being banned from basing.
the dynamics in pk and basing is much different though, with much more variables where spar is a square box room the gun stats drastically affect the outcome where as in basing its more based on skill because you're not just in a box like spar.
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when the gun has an unfair advantage on everyone and its exploited like chem was and very few others have it, then its a problem.
BAR is one of the most common guns used now, and majority of basers use BAR, so if the majority has the same weapon, there is no advantage and therefore no reason to change, atleast when it comes to basing.
spar on the other hand gives BAR users an advantage because again its a box and there spread, fire rate , etc has a greater impact on the match if the other person doesnt have BAR.
and it seems the main focus is on spar, so ban BAR from spar so people primarily use spar guns instead. wah lah