This is one of the best recoil setups I've seen with Tamiya, nice solid aluminum barrel with a good support in ABS.

I primed the barrel with Vallejo red oxide, then blasted a couple of coats of Future to make sure it's a solid, scratch resistant base.

I then weighed the barrel, 72 grams, and then took twice that amount of steel BBs, mixed it in Aves and added it to the rear of the turret roof to counterweight that massive gun.