KJW Sig Sauer P226 GBB Pistol Magazine
This gas blowback (GBB) pistol magazine is designed to fit the KJW Sig Sauer P226 and P229 GBB pistols. Use Green Gas (GG) or Propane for this magazine.
Sure, it can fit 25 BBs if you are able to load them perfectly in a staggered, zigzagging pattern but 1.) that is time consuming and 2.) may cause jamming due to the BBs being compressed against each other. Aim for 20 - 24 BBs per load. I own 10 of these and in optimal shooting conditions and with a judicious firing rate, on average I can get up to two and a half BB loads per GG fill. But in a game scenario it will be closer to one and a half per fill and even less if you like to rapid-fire.
The construction is mostly metal so it feels very solid in your hands. The feed lips, however, are plastic. So avoid letting the slide of the GBB pistol slam forward when chambering a round like you see in movies, instead continue the motion forward with your hand. Also avoid letting go of the follower (the spring loaded part that pushes BBs up towards the lips) when there are no BBs in the magazine, the impact may break the lips and cause the follower to come flying out and probably get lost. And needless to say don't drop the magazine on a hard surface and if you do, hope that it does not fall and break the feed lips. Fortunately, replacement lips are not that hard to find online in case yours do break.
KJW magazines are notorious for being leak-prone out-of-the-box. This is no exception. Every single one of mine have leaked within the first 100 or so rounds through it, and in every possible part it can have a leak in. The usual fixes work very well for this magazine but they do involve taking it apart, which can be daunting and messy for the inexperienced. DIY guides abound online, though. Then if you take care to do the proper maintenance on the magazine after fixing it it will actually last you a long time.
In conclusion, I will say the price and performance is average but the initial reliability is below average. Because of the leaking issues I don't recommend it for complete beginners or players who do not like DIY fixes.
KJW is Tokyo Marui compatible
Works with both KJW P226 and P229
Good BB and GG capacity
Mostly metal, feels solid
Relatively cheap cost
KJWs are notoriously leaky out-of-the-box
Plastic feed lips are somewhat easy to break if not careful