I have sporter type LE #4 rifle with a full length barrel and a flash hider. I want a truck gun and this rifle is Way to long. The flash hider was held on with a set screw. I would like to shorten the barrel to 18.5" I removed the sight guard. Does the front sight come off and if so, will it expand to the thicker barrel contour ??? There is .056" difference. It looks like there maybe a pin on the top side of the sight.
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