[ARCHIVED THREAD] - Muzzle devices

Posted: 12/15/2013 3:05:21 PM EDT

How much does torquing down a muzzle device affect accuracy?
What happens to the bore diameter?
What is optimum torque?
When building a high performance engine it's common to bolt a plate on the engine block before machining, so the cylinders will be round when the heads are installed.

Posted: 12/15/2013 3:11:30 PM EDT

[#1]

why would it? Once its screwed on, its screwed on. Shouldn't matter "how tight" it is.

Posted: 12/15/2013 4:00:06 PM EDT

[#2]

An AR isn't a "high performance engine". Don't make it harder than it needs to be.

15-20 ft/lbs for an A2 per TM 05538C-23&P/2

Posted: 12/15/2013 4:10:01 PM EDT

[#3]

Over torquing can definitely distort the bore and cause accuracy issues. I try to never exceed 30-35 ft lbs for any reason.

Posted: 12/15/2013 4:40:37 PM EDT

[#4]

Quote History

Quoted:
Over torquing can definitely distort the bore and cause accuracy issues. I try to never exceed 30-35 ft lbs for any reason.

View Quote

Posted: 12/15/2013 4:42:34 PM EDT

[#5]

There is a Surefire muzzle installation video on YouTube that warns against over tightening, and how it affects accuracy.

[ARCHIVED THREAD] - Muzzle devices

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[ARCHIVED THREAD] - Muzzle devices

[ARCHIVED THREAD] - Muzzle devices