[johnbmwe34]

the cost ? any pix before and after? range report b4 and after? thanx.

[George Hill]

The purpose?
To make a uniform nozzle for the escaping gasses as the bullet exits the barrel to eliminate any disturbance to the base of the bullet as it leaves...
In essence - it keeps the gun accurate.

[BigG]

I think the crown also keeps the rifling protected if the muzzle gets banged against something hard.

[Sean Smith]

Both those statements are correct. And it is cheap... usually $15. Depending on how good the factory crown is, the difference can be anywhere from non-existent to quite large.

It also looks cool :D

http://www.burnscustom.com/images/121.jpg

[Skunkabilly]

Some like the Beretta Elite II and GSD come with it from the factory...a pain to clean, really.

[Jim Watson]

Bear in mind, a dead flat muzzle is still a crown, it's just not a convex crown, concave crown, recessed crown, or 11 degree crown. It is probably the most accurate (ref old Dan Wesson ads for the "ugly muzzle") and is certainly the easiest to clean (ref Sharps and other black powder rifles.) But it gives no protection to the end of the rifling, so you have to be careful. I am VERY careful with my '85 Single Shot.