Modern Sporter dedicated rimfire upper UPDATE NOV 7

purplezuk said:
I personally wouldnt go with. Conversion bolt setup if you are planning to go under 18.6".
I think you're asking for legal trouble since it can still fire 223 in less than 15 seconds.. it's a huge risk in my opinion.
Jp is the logical option here with their dedicated 22lr barrel
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I agree!! Not worth the risk in my opinion. Even IF it is legal the lawyer bills can be staggering if things go wrong with the wrong LE encounter.
 
I think I'll go with a JP kit to get their dedicated 22lr barrel, and put on a magpul fixed stock. By my guess the rifle length will be about 34" +/-
I'm trying to get it as short as legally possible but can't find any barrels offered by JP shorter than the 18" offered in the 22lr kit.

Anyone know of alternatives, or am I getting a gunsmith to trim the length of the barrel?

Is ATRS planning on offering or suggesting products to build a dedicated 22lr with the MS?
 
ColinD said:
I think I'll go with a JP kit to get their dedicated 22lr barrel, and put on a magpul fixed stock. By my guess the rifle length will be about 34" +/-
I'm trying to get it as short as legally possible but can't find any barrels offered by JP shorter than the 18" offered in the 22lr kit.

Anyone know of alternatives, or am I getting a gunsmith to trim the length of the barrel?

Is ATRS planning on offering or suggesting products to build a dedicated 22lr with the MS?
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As stated previously , we are looking at this, but unfortunately it takes time. As soon as we have anything back from SFSS , JP and some other sources we will post it.
 
ColinD said:
I think I'll go with a JP kit to get their dedicated 22lr barrel, and put on a magpul fixed stock. By my guess the rifle length will be about 34" +/-
I'm trying to get it as short as legally possible but can't find any barrels offered by JP shorter than the 18" offered in the 22lr kit.

Anyone know of alternatives, or am I getting a gunsmith to trim the length of the barrel?

Is ATRS planning on offering or suggesting products to build a dedicated 22lr with the MS?
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You can get barrels as short as 4.5 inches. I'm just trying to remember who offers them off the top of my head. Maybe CMMG?

Edit: yeah its cmmg. You can get 4.5" 9" 16" and 20"
.22lr chambered barrel with dedicated bcg kits
 
Thank you for starting this thread. I own a CMMG kit and found it to be "ok" with my generic AR, but not as smooth as the SU-22 in my collection, which uses very similar magazines.

Since I have 3 uppers coming, I think I will have a 22 setup built. Looking forward to the options to be offered.
 
jiffx2781 said:
Another 22lr option to consider is the 2A Armament dedicated 22lr kit. It's a really lightweight kit with 7oz titanium bcg and 13oz 16.5" fluted barrel that's an aluminum barrel with a steel pencil barrel insert.

22LR_BARREL-BOLT_grande.jpg


https://2a-arms.com/collections/ar-...rmament-ar-22lr-bolt-carrier-barrel-black-kit

I have no idea where to get one though
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This is exactly what I need. We need to work on getting this in Canada. But at the same time I'm certainly interested in a 12.5 inch or so or whatever is the minimum length with a collapsed buttstock
 
The interpretation by the SFSS guys regarding short barrels in 22 LR on our MV and MS.

We tried.



Good afternoon Rick,

Your question has been referred to me. I understand the specific question to be the classification of a rifle with a 22 Long Rifle (rimfire) barrel mounted on the receiver of a semiautomatic centre fire rifle (the Modern Sporter), temporarily replacing the centre fire barrel. You also mention that the overall length will never be less than 660 mm (26 inches) on folding of telescoping stock models.

Given the above, the provisions which render a rifle a restricted firearm via a folding or telescoping stock, would not apply.

Thus the determining factor, and the precise point of your question, would be whether the 470 mm barrel length provision applies. In this case, I believe it does.

The description of the firearm clearly establishes that it is not a prohibited firearm, but also establishes the underlying firearm is capable of discharging centrefire ammunition in a semiautomatic manner, even though that is not what is intended when the 22LR barrel is installed.

The remaining factor is the length of the barrel, which would result in a restricted firearm classification if the barrel length were less than 470 mm; and with a longer barrel, non-restricted.

So if a non-restricted outcome is desired, the barrel length of the 22LR barrel must be over 470 mm (18.5 inches).

Regards,


Murray A. Smith
Manager,
Specialized Firearms Support Services
Firearms Investigative and Enforcement Support Services Directorate
Canadian Firearms Program
Specialized Policing Services
 
I appreciate the good work you guys have done and are doing, so I wont let my frustration with their response stop me from supporting you guys.

Keep up the good work.
 
Shorerider said:
Well crap. That changes my plans. Better to find out now and not have the legal problems later.
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Hence my taking the time to request clarification from the power that is.
120ish makes some strong and reasonable points in his interpretation, but I do not want to put anyone in a poor legal situation.
Believe me we don't like the decison 1 bit either but now knowing is still better than having to purchase a lawyer cuz they ain't cheap when things went poorly.
 
jiffx2781 said:
So according to "the man" this 22lr upper would be perfectly legal to strip and install on the MS?

https://www.cmmginc.com/product/upper-group-mk4-a4-22lr/
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I would think so given the 20" barrel.
My take away from Murray's correspondence is that the MS was submitted as a centerfire rifle. The modularity has in this case worked against us.
We are free to swap uppers to any caliber the platform will support and to keep NR status the barrel regardless of length has to be 18.5" or longer.
He replied in further emails that IF we were to design and make a lower that was dedicated to 22LR the rules would be different and the shorter barrel situation "could" apply.
BUT this means another fairly significant investment in time and money to design and then submit a production rifle for inspection.

Frankly I believe the CMMG kit you suggest is one of the better options for having a 22LR upper for the least cost and shortest time to get shooting.
 
Those are some real strange logical hoops for them to jump through.

The CFC should have some proper lawyers on staff instead of interpreting law by the seat of their pants, because this is patent BS - the "underlying" firearm is NOT capable is discharging centrefire ammunition. I'd love to see the lab try it with a rimfire barrel and bolt...
 
I agree, I'm out, at least on a .22 not restricted build. The whole purpose for my wanting to do an AR22 build was a shorter non restricted. If I wanted a short barreled restricted I'd already own one in .223 and if I wanted a full length non restricted I'll go with a more diverse caliber. This sucks, ruined my day :(
 
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