I just picked up an M4A1 RIS II (12.5") and it is awesome. Mine did not come with a manual; any digital versions available?
I'm not particularly concerned with installation as I've installed DD Lites, but it'd be interesting to know how to mount a 203 on this thing.
I'm throwing it over a Noveske Afghan (14.5) barrel with either an AAC or Vortex and Once I get it assembled I'll throw up some pics.
Mike


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