This is a previous post by Overkill45:
"PR Bullet makes some.
5/8
https://www.prbullet.com/shop/products_view.php?sSKU=nef5.87/8
https://www.prbullet.com/shop/products_view.php?sSKU=0578You can also call Metrics Unlimited. Their plug is very popular and very well made too.
1-800-638-7986 between 9:00 am and 3:00 pm EST M-F, You will need to know whether it is a 5/8" or 7/8" breech plug. The cost is around 35 bucks shipped to your door/mailbox , I'd ask for Bob who can help you out or direct you to someone who can"
*part of this thread;
https://www.24hourcampfire.com/ubbth...EF_carrierless_breech_plug?#Post11719489