SIG M400 pistol vs SIG 556 pistol

983 Views 3 Replies 3 Participants Last post by Yewtaw Kid, Dec 4, 2014

Yewtaw Kid

Discussion Starter · Dec 4, 2014

My LGS called about a new arrival-a Sig M400 pistol. I generally prefer the cleaner operation of a piston system (SIG 556) over DI (M400) However, the M400 weighs about .8 pounds less than the SIG 556. Any thoughts or experiences with either weapon?

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17heavy

· #3 · Dec 4, 2014

I'm completely in agreement with Scott. I SBRed mine as well. I also have an AR style pistol (non Sig) but basically the same as the 400. If I could only have one it would be the 556. However IF I intended to keep it in pistol configuration I would probably go with the lighter weight of the 400.