Review This is yet another G&G full metal AEG. Tired of shooting full auto and want a true sniper airsoft gun GR25 is a semi only AEG sniper rifle. It is 1:1 to the RS model and once again, G&G did an outstanding job on the exterior of the gun and functioning. It comes with functional bolt stop, you can catch your bolt with the bolt stop. A slap on the bolt stop, the bolt will slam forward!!. This AEG is fully upgradeable.