Has anybody used these barrels in any of there builds? Do they match up with U.S. uppers, bolts and gas blocks well?
https://www.canadaammo.com/product/detail/dominion-arms-da-556-20-barrel/
https://www.canadaammo.com/product/detail/dominion-arms-da-556-14-5-barrel/
DR
https://www.canadaammo.com/product/detail/dominion-arms-da-556-20-barrel/
https://www.canadaammo.com/product/detail/dominion-arms-da-556-14-5-barrel/
DR


















































