have a 16" barrel with one on it. you can have it all for $10.00, + shipping. the barrel is no good.
the front sight base is .750" and fits all barrels except the early pencle, and bull. this sight base
has the bayo leg. milled off. the barre has a barrel nut, and free float tube. (not a handguard )
some barrels have a free float tube that fits under the handguards. you may have to do a little work to get it off, i never tried. i don't have time to foolwith removing the sight base. so you hsve to take the whole barrel. 16" car. h-bar. (barrel is not any good) thanks.