NOPE I was wrong...

Same thing with Remington shotguns. They say it's a 18" barrel and in fact it's 18.5" with the RCMP method of measuring.

They lengthened them to 18.5” quite a few years back so that the barrel would be flush with their +2 extension. For some reason they still refer to them as 18”.

I have an older law enforcement Wingmaster and it is 18”.
 
The 18 1/2" limit was selected to restrict many existing rifles, like the M-1 carbine, and all the US legal semi autos with 16" barrels.
Just as 105mm was selected for handguns, to prohibit as many as possible.
Initially, a permanently attached extension was accepted.
When it became apparent that permitting extensions was allowing fish to escape from the net, the rules were changed.

Yes, thats pretty much what I was alluding to

Its always important to consider the agendas of the people who push these laws, and I'm not talking about the official garbage that is fed to the media because theres no question that fails the litmus test
 
They lengthened them to 18.5” quite a few years back so that the barrel would be flush with their +2 extension. For some reason they still refer to them as 18”.

I have an older law enforcement Wingmaster and it is 18”.

I’ve never seen an extension on the mag tube. Not saying we don’t, I’ve just never heard of it.
 
This is interesting. I have had one for sale on the EE for a while, perhaps I will keep it now. I'll take a measurement also. It is hands down the most accurate AR barrel I have ever shot.
 
No go boys I had a problem with my bolt locking in, noveske spr measures in at 18.12 inches, 460mm

Why am I not surprised. Basically the same measurement as my BA barrel. 18" + bolt face depth. Brings it to 18 1/8" +/- a couple thousandths.

I suspect EVERY American manufactured 18" barrel is going to measure out the same.

Buy a 20" or one of the barrels I posted earlier that has been made specifically to meet our NR length requirements. Or go with a custom made barrel.

We don't have many options however with the new NR receiver sets I'm sure more and more options will become available.
 
For a company as reputable Noveske and their attention to detail, it shouldn't be a surprise when they say 18" SPR barrel they actually mean 18".
 
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