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Posted: 2/21/2001 7:19:53 AM EDT
hi will the m-4 upper work on a colt   sp1 lower   any info  guys [heavy]
Link Posted: 2/21/2001 7:28:19 AM EDT
Yes it will. Pin size is different on SP-1. You can get a pin adapter to take care of it.
Link Posted: 2/21/2001 7:59:21 AM EDT
This should be posted on the [B]Rifles, Uppers, Lowers, Barrels, and more[/B] forum
Link Posted: 2/21/2001 9:17:15 AM EDT
He may have posted over there but got no response. I have had posts over there that got no response. Just trying to help a brother out! [@:D]
Link Posted: 2/21/2001 9:26:45 AM EDT
1.  Didn't see it there.
2.  Most folks will go to that forum and this useful tidbit won't be there

3.  THIS LEADS TO CHAOS!  We must have order!

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