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  1. Uppers, Lowers, Barrels and Parts
    I'm thinking about putting Swiss handguards on my Sig 556 ER Upper (JS023XXX). I currently have the U.S. made Swiss-style handguards, which I like, however they are just a bit wobbly. Do the real Swiss 551 handguards fit better on these models? Do they have to be shimmed?
  2. Non-FFL
    Looking for a Swiss style (non collapsing) stock, either from the 556xi or 551a1/556 classic. Also looking for a set of real 551 handguards.
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