SIG 556 question?


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rcmodel
March 18, 2008, 03:42 PM
What is the little ring-thing that hangs down under the gas block?
SIG 550 Bi-pod mount?

It looks like an industrial-grade hooded front sight, but obviously is a fixed part that doesn't swivel 180 degrees to the top of the rifle.

What is it?

rcmodel

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earthling?
March 18, 2008, 08:03 PM
On the 556's predecessor, the Sig-550, you slide a bayonet lug in and secure it with a pin through the hole. I haven't heard of a specific bayonet for the 556. Maybe the 550 bayonet is compatible with the 556.

G17Steve
March 19, 2008, 12:31 AM
Yeah its for the bayonet,I think the sig550 series one will work.I seem to remember someone on one of the sig556 forums having one.

rcmodel
March 19, 2008, 02:47 PM
O.K.!

Hadn't thought of a bayonet lug mounting point looking like that.

Thanks for the info!

rcmodel

sinistr
March 20, 2008, 01:00 AM
i havent had a sig 550 in a few years but if i remember correctly that is for a slingpoint.the bayo lug was ground off.

Destructo6
March 20, 2008, 11:43 PM
There is a peg that slides in there and is retained by a rollpin/split pin/tension pin or whatever you want to call it. The peg locks the bayonet in place.

There's a bunch of them for sale on ebay.

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