Should it go on with taper toward the receiver and the concave toward the muzzle?

Which way to put on crush washer. But does it matter how the crush washer is placed on the barrel of the ar15. There is a reason for the correct orientation. The primary reason for the crush washer.

The rounded side of the crush washer needs to go on the side with the irregularities , in this case its the oil pan. This way, when you crush it, it fills. Now, for me, i prefer the crush washer, as it is very simple install and takes less time than the shims.

This a video on how to install the crush washer on a ar15 platform and why its important to be installed properly.if interested on where to purchase the cr. The washers generally come from the producer.080 to.100 of an inch thick and their purpose is not to create a seal,that is secondary. The part of the washer that crumples up was towards the pan.

Crush washers are the type of washer that goes around a bolt, not a washer like the machine next to the dryer for your clothes. Place the crush washer over the muzzle threads, then thread the muzzle device up against the crush washer, hand tight. Just showing tge importance of crush washers, and how the copper and alluminum ones should be rrplaced everytime

Crush washers are perfectly acceptable to use on any open aperture muzzle device, such as the standard a2 birdcage flash hider. The narrow end of the cone is placed facing the rear of the rifle and backed. (an ordinary plumber's torch will do.) once it cools, take a file and file down any ridges or burrs.

They’re used in internal combustion engines and hydraulic systems to seal fluid or gas. I'll be replacing it upon my next oil change, but i'm unsure which way the washer should face. Simply slide the crush washer on, thread on the device until it is too tough to twist by.