Greenhouse gases are the cause of Greenhouse effect.The greenhouse gases which include CO2, Methane etc. trap the heat in the Earth's atmosphere and don't allow it to escape.
The weapon is fitted with a Leupold Mark 4. The rifle is also similar in appearance to the TAC-338 rifle that Kyle used in real life. McMillan TAC-338A sniper rifle with Harris bipod, Leupold Mark 4 scope, and AN/PVS-22 Universal Night Sight - .338 Lapua Magnum. Kyle taking aim with the rifle. Right side of the rifle.
The rings you select must be the same inner diameter as your scopeâs tube diameter. The rings clamp onto the scopeâs main tube, so the sizes must match. Most scopes are 1 inch diameter as are most rings. However, there are many 30mm scopes and rings, as well as a smattering of other choices, such as 34mm. The other end of the ring attaches to the rifleâs base, so it too must be compatible with your rifleâs particular base. The important thing to remember is to match the rings with the scope and the base.