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Need help on an AR build

446 Views 6 Replies 5 Participants Last post by  hambandit
Hey guys,

I have recently acquired a billet lower. It is a Seekins brand. Will this lower work with a non forged or shall I say cast upper?? Thanks for the help
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Hey guys,

I have recently acquired a billet lower. It is a Seekins brand. Will this lower work with a non forged or shall I say cast upper?? Thanks for the help
What are your concerns? A tight fit?
The only fit problems I've heard of are with old Colts that have a different size hole and pin. Lots of people mix different types of receivers, like putting a forged upper on a polymer lower. Unless it's out of spec, I don't see how you'd have any problem.
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67Firebird
Thanks for the info I certainly appreciate the insight.
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Yep as long as both are in spec shouldn’t have an issue. I’ve done a few the same way without problems.
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