The Tri Rail version allows you to instal your own prefered optics.
The RDS in the conventional P90 is less than Ideal in my opinion ..
A TR allows you to mount a Eotech or another aftermarket optic that has greater performance.
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Brian McIlmoyle
TTAC3 Director
CAPS Range Officer
Toronto Downtown Age Verifier
OPERATION WOODSMAN
If the tongue could cut as the sword does, the dead would be infinite
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