I just bought a Sig516 upper on a whim, I have a few DI guns but this is my first piston gun.
I usually keep parts like gas tubes on hand. Is there anything I should have extras of for this upper?
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I just bought a Sig516 upper on a whim, I have a few DI guns but this is my first piston gun.
I usually keep parts like gas tubes on hand. Is there anything I should have extras of for this upper?
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Of course the 516 doesn't have a gas tube, so no need to worry about that. I own several 516s. As far as "piston unique" parts go, I do have a couple of extra piston pushrod assemblies, and an extra gas valve. Only other really unique part to have on hand might be an extra bolt carrier group. Numrich is a good source for 516 parts. I will add that although I have been collecting some extra parts for my 516s, I have not needed any of them yet. So far, 100% perfect function and reliability, along with very good accuracy.
Thanks I'll check them out.
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Spare parts are good regardless of what you run.
Yeah, I have a spare carrier I got cheap, as well as a few gas valves and an op rod.
CDNN had some parts, as well as Numrich and optics planet.
I would think the biggest item(s) to have is an extra piston assembly, i.e. piston, rod, spring, etc. The BCG will be a keyless one and even regular carriers rarely break. Most bolts (to include the 516) are basically AR ones, with or without the gas rings.
A DI upper? (sorry, couldn't help it)
You know, for the price Sig is charging for this apparent overrun of 14.5 uppers (they come with full auto BCGs) from a military contract, buying another one as a spare is not a crazy idea.