Brass goat and don't look back.
I have 4 of them with 10 and 30 round holders.
Super easy to pop on, off a ar15, I use mine extensively coyote calling, at range, in -20 to 90 degree temps, no failures, no bounce back, no issues ever.
I use them on my 6.5 grendel, 224 valkyrie, 223s, 6x45, 6x6.8 rigs.
I tossed out all my bag style catchers.
