Lead & Steel Llc LS556PEN-MID-13.9 5.56mm 13.90" Pencil Profile Features M4 Feed Ramps
https://www.tandktactical.com/shop/7427053012393-lead-steel-llc-ls556pen-mid-13-9-5-56mm-13-90-pencil-profile-features-m4-feed-ramps-57816
https://www.tandktactical.com/web/image/product.template/57816/image_1920?unique=61bf205
The Lead & Steel AR-15 barrels are turned from 4150 Chrome Moly Vanadium Steel and coated in a QPQ Black Nitride finish.
