Very pleased with this project started out as rifle in this post
http://www.gboreloaded.com/forums/index.php/topic,137608.msg1099482839.html#msg1099482839Since that I have had the rifle nickel Nitrite which is a form of plating. Hundreds of round out of it and not one complaint. Keeps up with most AR users, not really saying that much as most shooters are not marksmen anyway.
Stock Butler Creek
Rifle Rugger
Front hand Guard UltiMAX
Coating WMD weapons