G192627 wrote:The thing about this Sig that I'm attracted to is the gas piston. It keeps is *very* clean.
Gas-pistons aren't new. I have an M1A, which is basically an extension of the M1 Garand design of the mid 1930s, and it has a gas-piston. You still have to clean the receiver group and keep it properly lubed. A rifle's chamber will still become dirty without gas blowback from a tube. That fouling will still accumulate around the bolt, bolt face, and the receiver. A gas-piston design doesn't
guarantee cleanliness. It simply
reduces the amount of fouling around the chamber and the receiver and its parts, and it makes cleaning them easier. If it weren't so, you would never have to clean a bolt action rifle.
I have nothing against gas pistons. I think my M1A's system is pretty cool. But I just like for there to be clarity about their use in the real world. A gas piston won't keep your rifle spic and span. It will merely reduce the amount of effort to clean it, and it will fire a lot more rounds before become too fouled to fire. But if you don't clean your gas piston rifle with some regularity, you will sooner or later experience failures related to fouling. Furthermore, you still have to lube them about the same amount, and they will go "dry" about as fast as any other semi-automatic "assault" type rifle. They aren't an absolute panacea, but they are being marketed as if they were, and manufacturers are charging a pretty penny for adding this gizmo to your rifle. Gas-pistons
are a good idea, and there are some reliability benefits to having one if you are stuck in a protracted firefight and burning up lots and lots of ammo. But if you ask any professional who stakes his
life on a gas-piston AR type rifle if he cleans and lubes it any less often than he did the direct gas impingement rifle he carried before, he would think it was a dumb question.
I don't say these things to discourage you from buying a gas-piston AR. By all means get one. I wouldn't mind having one myself. They are pretty nifty. That said, they aren't the be all end all, and my direct gas impingement ARs are clean and lubed and reliable
because I keep them that way, and not because of any magical set of parts.
“Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.”
― G. Michael Hopf, "Those Who Remain"
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