dpms 1 piece gas ring's?

[car-15]

I just picked up a couple of dpms 1 piece gas ring's for my ar's, anyone have experence with them, good or bad? it seems like a good idea so I figured I would give them a shot. for less than 4 bucks it's no big loss if I have to toss them.

[7idl]

wasn't the single piece ring mfg by a company named McFarlan or something?? did dpms buy them out or ????

they're ok, I've never heard of any issues with them.

[car-15]

wasn't the single piece ring mfg by a company named McFarlan or something?? did dpms buy them out or ????

they're ok, I've never heard of any issues with them.
they say dpms and mcfarland on the website so could be, I got them from midway, I'm going to put them in tonight and try them out this weekend.

[Hoser]

If your guns runs with the McFarling rings, use them. I have seen them fix guns and make others stop cold.