Looking for a review on an AR-type rimfire
10-06-2015, 02:45 PM
#1
Spike
Thread Starter
Join Date: Jan 2014
Location: Winston County, AL
Posts: 84
Looking for a review on an AR-type rimfire
Sometime last winter or early spring I was digging around on one of the outdoors websites (I think it was OL, but I'm not 100% certain) and came across a very short review for a rimfire AR type rifle. Supposedly it would fire .22, .22 mag, and .22lr interchangeably, even from the same magazine. Also, supposedly, it was made by M&P. I've checked OL, I've checked the M&P/S&W sites, and I've Googled until my eyes hurt, but I can't find mention of it anywhere.
Anyone know anything about this? Did I dream it? Did the manufacturer plan to do it and then back out? What gives?
And while we're at it, any tips for a decent AR-type rimfire that won't break the bank but that has pretty good accuracy at about 75-100 yards?
Anyone know anything about this? Did I dream it? Did the manufacturer plan to do it and then back out? What gives?
And while we're at it, any tips for a decent AR-type rimfire that won't break the bank but that has pretty good accuracy at about 75-100 yards?
10-06-2015, 05:10 PM
#2
Giant Nontypical
Join Date: Dec 2007
Location:
Posts: 5,130
10-06-2015, 05:14 PM
#3
Boone & Crockett
Join Date: Jan 2004
Location: Eastern PA
Posts: 12,745
I have an M&P-15 .22 LR. The thing is amazingly accurate and reliable. It is, for me, solely a plinking rifle because PA in their infinite stupidity do not allow semi automatic rifles for hunting. Even for small game. Of course they don't allow air guns either??
10-06-2015, 06:57 PM
#5
Nontypical Buck
Join Date: Oct 2009
Location: Kansas
Posts: 3,902
Can't run 22lr in a 22WMR chamber - the LR is a heeled bullet, such that the case and bullet are the same diameter, the WMR is a typical crimped bullet, where the case is larger diameter than the bullet/bore, which leaves the 22LR case undersized for the 22WMR chamber.
It'll fire, but you'll get lots of split cases, and lots of torching in your chambers.
I also can't imagine feeding function would be reliable for a 22lr to strip out of a 22WMR magazine. They'd be standing straight up before they ever reach the chamber.
Not entirely sure how you modify a blowback action to tolerate a WMR but still cycle under a LR. As much trouble as manufacturers have had figuring out the 17HMR in a semiauto, I have a hard time believing they figured out how to make a 22LR and WMR run with the same springs.
I'd venture that it was a misprint - same action was able to support both rounds for different models - but I can't imagine anybody being foolish enough to recommend such a beast, let alone making it work for feeding and reliability.
If you find it, I'll be excited to see it.
It'll fire, but you'll get lots of split cases, and lots of torching in your chambers.
I also can't imagine feeding function would be reliable for a 22lr to strip out of a 22WMR magazine. They'd be standing straight up before they ever reach the chamber.
Not entirely sure how you modify a blowback action to tolerate a WMR but still cycle under a LR. As much trouble as manufacturers have had figuring out the 17HMR in a semiauto, I have a hard time believing they figured out how to make a 22LR and WMR run with the same springs.
I'd venture that it was a misprint - same action was able to support both rounds for different models - but I can't imagine anybody being foolish enough to recommend such a beast, let alone making it work for feeding and reliability.
If you find it, I'll be excited to see it.
