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wh1t3thunderbolt · April 9, 2013, 03:01 PM

I just tried to install a free float quad rail on my Bushmaster Carbon 15. I ran in to the barrel nut problem that was mentioned above. With the larger thread pattern the supplied barrelnut wont fit. Has anyone tried drilling and tapping an undersized barrel nut to fit the 2nd gen. thread size??

April 9, 2013, 03:01 PM	#4
wh1t3thunderbolt Junior Member Join Date: April 6, 2013 Posts: 1	barrel nut I just tried to install a free float quad rail on my Bushmaster Carbon 15. I ran in to the barrel nut problem that was mentioned above. With the larger thread pattern the supplied barrelnut wont fit. Has anyone tried drilling and tapping an undersized barrel nut to fit the 2nd gen. thread size??