This Dead Air Armament Flash Hider suppressor mount is brand new and unused in the packaging. (7.62) 5/8x24 thread (DA302) This flash hider does not ping. It is priced at $70. shipped. Payment would be by a USPS or bank money order, or by Paypal (regular or discrete), your call. No further price reduction on these items, and no trades are needed. Below is a link to more information on the item.
https://www.m4carbine.net/itrader.php?u=7422
https://www.silencershop.com/accessories/flash-hiders/dead-air-flash-hider.html
