Thread: M4 s.i.r.
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Old January 5th, 2010, 06:58   #5
Spike
Privateer Airsoft
 
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Join Date: Dec 2008
Location: Beaverbank, NS
If you don't have your heart set on a SIR specifically, you could always do a CASV rail, which will also have a battery compartment for minis. They have tabs for quick opening
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