Interesting. Original Swiss SIG 550 Lower Receiver with Swiss Internals.

Something people fail to realize is that each ATF "Letter" that is sent to MR Smith, is ONLY for MR Smith. Its specially made for special units, paratroops and the AAD 10 (CH). (You must log in or sign up to reply here.

I figured I was going to get trapped parts swapping no matter what, resulting in a half-breed gun either way so I opted for the easier (and debatably cheaper) road of staying with the 556. Sig Sauer All Rifles/Pistols. Some states have legal restrictions for the purchase of items so we need to ask for your location.