AR barrel profile for supressor


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greyling22
March 19, 2010, 02:11 PM
does the barrel profile (pencil, m4, hbar) matter for suppressing a rifle? is the extra weight of the suppressor too heavy for a pencil barrel? etc.

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DoubleTapDrew
March 19, 2010, 02:35 PM
No, just the threads on the end (1/2"x28tpi is common for .223)

WoofersInc
March 19, 2010, 03:14 PM
With the different barrel diameters you will get different barrel harmonics once the suppressor is mounted. It may cause differing shifts in point of impact with the suppressor.

LiquidTension
March 23, 2010, 11:40 AM
The only thing you may run into with a very thin barrel is not having enough of a shoulder to safely mount the can/QD mount. Otherwise all you have to worry about is POI shift.

taliv
March 23, 2010, 12:03 PM
keep in mind that with a suppressor, the barrel will get much hotter much faster

LiquidTension
March 25, 2010, 02:54 PM
^ Good point. Bring gloves or a rag to the range or you won't be able to take the can off. And don't set it on anything that can melt - plastic, carpet, nylon, etc.

Ranb
March 25, 2010, 06:39 PM
I make a muzzle brake that fits tightly over the last half inch of my AR barrel to mount the silencer on. The brake is about three inches long and mounts to the silencer front and back making it very secure. Not only does shooting suppressed make the barrel heat up faster, the action spits out more crap into your face making eye protection a must. Hot pads are a good method of handling the silencer when it is hot.

Ranb

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