Brass Catcher for an AR-15?

[Orpanaut]

I need a way to keep my 6mm ARC brass from disappearing when it ejects from my AR-15.  What's a good solution?  I see many brass catchers for sale but I don't know which ones work best.

[Dino11]

Brass Goat it's not hard to put on or empty, my son has one.

[tlbaker]

TACSTAR makes a picatinny mount catcher that works well. I also have a CTK Precision universal brass catcher.

[dfosland]

I have a couple from Tactical Brass Recovery, not cheap, but very good. They use a Picatinny mount and can hold a lot of brass. I recommend spending the extra for the version that has the hinge, easy chamber check when you are at a match, just swing the catcher out of the way.

[BD1]

I've used a variety of brass catchers over the years. For the last ten years I've been using one of the net ones that Velcro's to the forend, after I replaced the netting with cordora pack fabric keeping the bottom open. It worked OK, but as it got worn and frayed it would occasionally get caught in the bolt carrier. It was also a little fussy to keep correctly aligned on the ejection port. This summer I finally broke down and spent the money on a Brass Goat which is a BIG improvement. I leave the bottom off so the brass collets on the shooting bench and presents no risk of jambing up the ejection port. Being a stiff, completely plastic, (Kydex?) unit it seems to be completely reliable and stays correctly aligned.