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smokiniron · November 9, 2012, 02:27 PM

HI folks,

Following up on my recent purchase of a S&W M&P 15 Sport, what is the maintenance interval and type(s) of cleaning methods to clean the gas impingement tube?

How do I tell when it needs cleaning - besides when the bolt won't cycle?

Does cleaning require removal of the front A2 sight? If so, does this mess up the zero? Maybe a lame question, but I haven't had that part off the gun yet.

I learned when I was 6 that I can only disassemble an alarm clock so many times (once) before it won't work any more. Trying not to do that to my firearms....

November 9, 2012, 02:27 PM	#1
smokiniron Senior Member Join Date: August 10, 2012 Location: Utah Posts: 232	Gas tube cleaning on an AR...? HI folks, Following up on my recent purchase of a S&W M&P 15 Sport, what is the maintenance interval and type(s) of cleaning methods to clean the gas impingement tube? How do I tell when it needs cleaning - besides when the bolt won't cycle? Does cleaning require removal of the front A2 sight? If so, does this mess up the zero? Maybe a lame question, but I haven't had that part off the gun yet. I learned when I was 6 that I can only disassemble an alarm clock so many times (once) before it won't work any more. Trying not to do that to my firearms.... __________________ "Figure Out What You Believe and STAND YOUR GROUND!" Nemo Me Impune Lacessit Lots of Cast Iron to Cook With... and a few defensive firearms, too!