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9/22/2017 12:11:25 AM
Posted: 9/19/2002 8:55:16 PM EDT
Can I put a bushmaster upper on a Colt lower, are they interchangeable or is there a diff, pins, etc..

Link Posted: 9/19/2002 9:12:25 PM EDT
It is no problem if the Colt lower has a small hole pivot pin. If the Colt lower has a large hole pivot pin, you will need an offset pin which costs about $6.
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