I'm did not mean to disparage the piston driven AR's. They displace the fouling to a piston and not back in the action, so the rifle isn't pooping where it eats. I get it. I just am a bit "meh" on the AR-15 right now. Too much tinkering and building took the "fun" out of it.

While I am looking at the Sig 556Xi and IWI Tavor, their cost is a bit tough to stomach. It's hard to save up and spend for another MSR chambered in 5.56 when I have two AR-15's that sling copper jacketed lead downrange like champs.

I'm going through the same thing with pistols. I own just one revolver. I own just one pistol chambered in .45 ACP, one in .40 S&W, and one in 10mm. I own just one bolt action rifle, and just one shotgun. I have some diversity in 9mm, but not in poly framed striker. I have a Glock 17 for my poly frame striker fired jollies. The rest are DA/SA alloy frame 9mm's.

I guess every firearms enthusiast goes through this.

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-John