newb question


February 3, 2012, 02:01 PM
hi all,

new to the site and gunning in general,

if i had a ruger 22/45 with a threaded barrel, could i add a screw on barrel extension to essentially turn it into a rifle/carbine with better accuracy?

my gut instinct is that this would violate a BATF law of be mechanically unfeasible,

thanks in advance

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February 3, 2012, 02:40 PM
be mechanically unfeasible

I would think the rifling would have to match up exactly...

A longer barrel, by itself, does not affect accuracy.

February 3, 2012, 02:45 PM

As NavyLCDR said, getting the two sets of rifling to match up would be nearly impossible unless it was assembled & rifled in a unit to begin with.

Then as soon as the joint threads wore in, it would be off again.

Besides that.

A longer barrel would be no more accurate then a short barrel, unless you extended the iron sight radius to the end of the barrel extension.

With an optic sight there would be no difference.

Adding a stock to a handgun is against the law unless you register it with the ATF and pay the tax.


February 3, 2012, 02:51 PM
Also- Accuracy is not a function of barrel length, velocity is. To echo NavyLCDR and rcmodel above me, you can't really do a barrel extension because of the rifling... Plus, all you'd end up with is a nose-heavy handgun, unless you managed to rig up a stock. Then, as you suspected, you're in NFA territory...creating a short-barreled rifle out of a handgun (unless you welded on a barrel extension and had a 16" overall barrel length, and 26" from back of buttstock to barrel tip.) Pick up a used Ruger 10/22 for under $200. That'll satisfy your want for a .22 carbine :-]

February 3, 2012, 03:22 PM
to clarify:

you can put as long a barrel as you like on a pistol (legally) but if you put a stock on it, you are in violation.

February 3, 2012, 03:32 PM
Making it less concealable is in fact, illegal without the paperwork, believe it or not.

February 3, 2012, 03:35 PM
didnt think bout the rifling.. :) totally answered my question

the stock addition/BATF rules seem a little weird.


February 3, 2012, 04:11 PM
To add to what has already been said, a longer barrel is actually less accurate because it will flex more than a shorter barrel. All that you gain is velocity, but velocity will give you a flatter trajectory.

Sent from my SAMSUNG-SGH-I997 using Tapatalk

February 3, 2012, 04:15 PM
A lot of firearms regulations are a little weird. Look up 922r - it'll make your head spin. Or check out this thread: A lady is writing about trying to get a gun in D.C. The process will blow your mind. Plus she's a good writer. And kind of cute.

Welcome to THR. Stay safe.

February 4, 2012, 04:28 PM
thanks everyone!

i feel like i just "leveled up" (me thinks im gonna like this site)

February 13, 2012, 01:52 PM
You should buy a target pistol if you want a longer barrel....

Dr T
February 13, 2012, 05:26 PM
BTW, the reason that the 22/45 has a threaded barrel is to prepare it to accept a suppressor.


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