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9/19/2017 7:27:10 PM
Posted: 6/30/2003 3:10:22 PM EDT
Will a SIR system fit on a 9mm or is the barrel diameter diferent?
Link Posted: 6/30/2003 4:50:42 PM EDT
#45s and the slimlines all wworh as long as the upper is "spec."
Link Posted: 6/30/2003 7:00:35 PM EDT
i'm assuming you mean mil-spec and i'm getting a rock river arms upper so will that be "spec" because i'm assuming it is?
Link Posted: 6/30/2003 7:08:44 PM EDT
ARMS won't warranty/guaranty their SIRS on uppers other than Bushy, Colt or Armalite, but they do acknowledge that their SIRs do fit others. The RR uppers are Mil. Spec., in their measurements at least, and I'm pretty sure others here have used RR uppers w/ SIRs.
Link Posted: 7/1/2003 7:28:30 AM EDT
my SIR #50 would NOT fit my RRA M4 upper without a little Dremeling, no big deal but it kinda upset me, now i dont believe in the rare case i needed to sell the SIR that i could because of the non-spec now. But end results to me look good ;) [img]http://members.aol.com/erouls/arsir.jpg[/img]
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