Am I calculating this correctly?

[Black_Sheep]

I find your post coupled with your sigline EXTREMELY ironic.......

I enjoy my firearms and my freedom, having an unregistered NFA firearm is a good way to lose both…

[ViniVidivici]

Oh, was mr. ATF man going to come to your house with a measuring tape?

By all means, continue to cowtow to this absurdity, all the way to 3 decimal places, if you like!

The irony remains, they do infringe.

[AndyLate]

Oh, was mr. ATF man going to come to your house with a measuring tape?

By all means, continue to cowtow to this absurdity, all the way to 3 decimal places, if you like!

The irony remains, they do infringe.

This is not the general discussion area. This is AR Technical Discussion, lets not turn it into a sh!t show.

Andy

[Clint]

Here is an example calculation.


Also, BCGs are available here is you need one.
https://blackrivertactical.com/WP/BR...Auto-p61518551

I’m in the process of building a mid-length 14.5 rifle, everything has been ordered but the barrel (Criterion CORE) and BCG are 2-3 months out. I would like to use the same WC Accu-Tac FH as I used on a recent 16” build, assuming it makes the required 16” minimum on a 14.5 barrel. Since I don’t have the barrel and BCG to mock up I measured the 16” barrel with the FH using a cleaning rod inserted in the barrel. From the bolt face to the tip of the FH is 17 15/16” (17.9375”), if I subtract the 1.5” difference in barrel length it comes out to 16.4375” which exceeds the 16” legal minimum when pinned and welded.

Is this the right way to make my calculation? I would like to order the FH so it’s already in hand when the barrel and BCG show up.

Thanks in advance