SIG/SAUER 551A1
do the sig/sauer 551a1 accept m-16/ar-15 mags? are they like all sig guns, reliable as hell?
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The Sig 551 A1 takes the Swiss 551 magazine.
I have no doubt it is reliable.
The Sig 556 takes AR magazines. I had one,
it was very reliable.
Both rifles are very similar, you can't go wrong
with either.[:)]0
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