Lead & Steel Llc LS556GOV-MID-13.9 5.56mm 13.90" Government Profile Features M4 Feed Ramps
https://www.tandktactical.com/shop/7427053012409-lead-steel-llc-ls556gov-mid-13-9-5-56mm-13-90-government-profile-features-m4-feed-ramps-57815
https://www.tandktactical.com/web/image/product.template/57815/image_1920?unique=e32f4c3
The Lead & Steel AR-15 barrels are turned from 4150 Chrome Moly Vanadium Steel and coated in a QPQ Black Nitride finish.
