Is this possible for AR owners?

[Gunfighter01]

If you were an owner of a non reg AR, and you installed the .22 cal conversion kit, would your AR be calif legal? The SB23 ban specifies centerfire cartridge. So, you remove the centerfire .223 caliber bolt carrier,and add the .22caliber conversion kit. The reason i bring this up is, if this can be done, or even if it cant, it would seem to make sense for a manufacturer like rock river, or bushmaster, to make a .22 caliber lower, that one could install his original upper, buttstock, and all the goodies and make a .22 caliber AR, then have your local 3-gun match directors start a new line of matches, to include in a separate catagory for scoring purposes , a .22 caliber class for .22 caliber AR style rifles. A good idea or not?

[grammaton76]

If you were an owner of a non reg AR, and you installed the .22 cal conversion kit, would your AR be calif legal? The SB23 ban specifies centerfire cartridge. So, you remove the centerfire .223 caliber bolt carrier,and add the .22caliber conversion kit. The reason i bring this up is, if this can be done, or even if it cant, it would seem to make sense for a manufacturer like rock river, or bushmaster, to make a .22 caliber lower

Two ways to read the question here.

Reading the first bit as talking about a non registered AR which was on the by-name list but not registered, would still be a violation and the rifle still can't see the light of day even if you install the 22 conversion kit.

Reading it the other way, doing this on an off-list lower, it may not be ok considering you're still running a 223 upper with a detachable magazine and a rifle that could switch over to being 556 by just dropping in a new bolt carrier. CA may not have constructive possession laws, but that's just way too risky for my blood. It's close enough they could try to make a convincing case out of it, and even if you win, it's just not worth the hassle considering how cheap 22LR uppers are.

I would not be worried if I were running a dedicated 22LR upper, though.

I do agree though that a 22LR restricted division of AR matches might be an interesting thing, though...

[Gunfighter01]

This is the reason i brought this subject up, i happen to see this posted in another forum: Of the many topics discussed at the Department of Justice SB-23 hearing in Los Angeles, the ones included in this report are of the most interest. DOJ Staff, including Randy Rossi, Director of DOJ's Firearms Division, openly admitted several things that have not been publicly acknowledged in the past.

Some of those items are referenced herein: ( listed in no specific order )

Although the Attorney General, Bill Lockyer, has publicly stated that the "Proposed Regulations" will not be re-written or amended, his staff made statements to the contrary.
The "One Minute Fix" is a legal alternative to registering a firearm under SB-23.
Converting firearms to fire rimfire cartridges, instead of centerfire, is a legal alternative to registering a firearm under SB-23. The example discussed was that of a Bushmaster XM15 with the designation of ".223 caliber" on the lower receiver. DOJ Staff admitted that function of the firearm is what determines the necessity of registration, not the labeling or name. Thus, an "AR-15 type" firearm that has been converted to .22 long rifle (with a conversion kit) would "exempt it completely" from SB-23 and the "Assault Weapon" designation.
Parts, such as pistol grips, flash suppressors, and thumbhole stocks, can be legally sold and possessed - WITHOUT REGISTRATION - as long as they are not installed on the firearm. NOTE / EXAMPLE: If a person has a AR-15 type firearm that has been converted to fire rimfire ammunition ( a non-assault weapon ) and also possesses an upper receiver assembly in a centerfire caliber, the centerfire type upper receiver cannot legally be INSTALLED on the firearm, but it can still be possessed.