Sig MCX 5.56 to 300 BLK Conversion

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Description

I am really enjoying the Sig MCX rifle. I found a .300 blackout kit for it and in this video show you how it shoots and how to perform the caliber conversion. The Sig MCX has come to be one of my favorite rifles.

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Category: Firearm Reviews Uploaded: 05/05/2016

 
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