[Kos-Mos]

The gas L96s are not Maruzen and are pure junk. The gas-in-bolt ones sometimes manage to get a shot or two before running out. They are clone of the Maruzen spring, with a "gas convertion" that was made by King Arms a while ago... that was not working so it was scrapped.

The gas-in-mag ones are cloned of the ARES/Star one and are junk too. Inconsistent and leak like hell. You have to replace everything in there with Ares spare parts to make it OK... at that point you are better off buying the real deal.
G&G gas L96 seems to be hit or miss too... based off the ARES design too.

The only "viable" gas L96 is the Tanaka M700 AICS.. which is actually a M700 with the AICS platform... not really a L96. Then again, mags have to be rebuilt with upgrade parts and valve strikers break "normally" after a year of use. And consistency is no where near what a spring rifle does.

Because it takes APS2 parts, the upgrades are easy to find. But because there is no quality control, and most parts are molded plastic, half the rifles need to be heavily modified to attain the level of performance you get from a "stock" brand-name BAR. I don't know for you, but I consider my time worth about 30-40$ and hour. Take 10 hours to fit upgrades parts and you should have bought the higher brand.