[ELR]

I recently purchased a Sig556 SWAT that has a Swiss style collapsible/folding stock on it. I would like to remove this Swiss style stock and replace it with a Magpul ACS stock. Can this be done and if so what parts and pieces do I need.
Thanks for your response.

 

[C Swimm]

You have two options fo putting any stock made for an AR to a 556.

1. Use the early version 556 that was made to take the AR buffer tuber. I am sure you would have no problem finding someone with an old lower to swap for your classic lower. You would need a front pin for the old lower to replace the screw pin if it still has those.

2. DDLES makes an Adapter to put an AR stock on a 556 classic lower, but it isn't released yet.

 

[desert punk]

DDLES stock adapter

Looks like it will not be long for the stock adapter to hit the streets.

http://sigforum.com/eve/forums/a/tpc/f/630601935/m/9620028702