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View Full Version : Differences between various Arms# 40 models



mtbr
09-21-07, 19:18
Greetings,

I'm new to this board. I'm confuse as to the differences between various Arms #40 sights. My objective is to co-witness it with an Aimpoint CompM2 mounted to an SIR. The SIR I have is from several years ago. It was their slimeline model - not the bi-level. Which #40L model do you recommend - L or L-SP?

Thank you in advance and have a great weekend.