For this video review by Geonox Airsoft, he covers the SAC AW Custom HX2302 Gas Blowback Pistol... "In this video we look at the SAC Custom Set with the AW Custom HX2302. This is a GBB in Hi-Capa design. AW Custom Replicas are already very good anyway. But here Sniper AS has improved a little more. In addition to the inner barrel upgrade from 6.03mm to a Maple Leaf 6.02mm tuning barrel, a Maple hopup with a MR (Maximum Range) hopup rubber 50° was installed here. Thus, the Airsoft hops heavy 0.36 BBs that are too heavy even for the SAEGs. So you have a very good range and precision."