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Posted: 1/20/2021 1:16:07 PM EDT
I am completing my first Form 1 for a SBR.

I have a complete lower with a M4 stock. I am considering a 10.5” barrel but don’t have it in my possession. How can I estimate the OAL on the Form 1?
Thanks!
Link Posted: 1/20/2021 1:20:25 PM EDT
[#1]
Does the manufacture make the same gun as an SBR with the same barrel?
If so then just go off of the that.
Link Posted: 1/20/2021 2:09:47 PM EDT
[#2]
I have a factory SBR with Barrel length marked at 10.3" and OAL at 25". I just use those numbers and modify it based on the barrel length that i'm using on the form.

Some people also just take the barrel length and add 19" for the receiver and stock.
Link Posted: 1/20/2021 2:15:06 PM EDT
[#3]
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