How To Install Sling On M4 Carbine' title='How To Install Sling On M4 Carbine' />UTG PRO Model 41. Carbine Length Quad Rail System. Great Product For The Price. I own several ARs with different configurations. On one of them, A Delton Echo, standard rails with heat shields I installed a bump stock. Realizing the standard rails with the heat shields would also hold heat in and firing multiple rounds as quickly as the bump stock will fire, I wanted something that would not hold in the heat, thus allowing the barrel and gas tube a better chance to cool between firings. This thing does the trick with the large holes allowing venting. Once I fire a couple mags and it really heats up a set the weapon down with the chamber still open allowing cooler air to enter both sides of the barrel and the venting allowing further cooler air all around the barrel. This works great and speeds along the cooling down time. The DDM4V1, the original Daniel Defense Rifle, is built with a Cold Hammer Forged 16 M4 Profile barrel with a Carbine gas system. It comes installed with our. Find great deals on eBay for ar 15 and magpul. Shop with confidence. Daniel Defense, known for manufacturing AR15 parts, have produced their first complete rifle. Daniel Defense M4 Carbine. The carbine features their own. Pros. Easy install and built well. Free Download Powerpoint Templates Salad Recipe.