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3/7/2004 6:42:46 AM EDT
 Does anyone know if the kac 600m buis will fit behind an arms sir?  It looks like it might in pics but I need to know for sure before I order one.  Thanks...phatboy
3/7/2004 11:25:32 AM EDT
[#1]
I don't think it will fit.The angle on the front of the base is to high.You can trim the SIR to fit.The 300m will.SJR556.
3/7/2004 2:14:19 PM EDT
[#2]
SJR has it right. The 600m will not fit without either trimming the SIR ow the sight. The only BUIS's that will work with the SIR unmodified are the Knights 300m, the ARMS #40, ARMS #40a of the ARMS #40l.
3/7/2004 4:20:28 PM EDT
[#3]
 Thanks guys, not the answer I had hoped for but what I was afraid of, I'll just stay with the arms 40...phatboy
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