12/8/2013 6:57 PM
I have had this gearbox in my SR-12 and my M4. I have had both of these guns for abut three years. The SR-12 I have put about 2000,000 rounds through this gun. The ROF is great and it started out at about 390 fps. After these three years it still has been preforming amazingly, the ROG is still high and is now 361 fps. This gun and gear box gets five stars from me. KWA is truely an outstanding product to buy and last. I recommend this product to any person who is serious about their gameplay. Truely made for being the best product on the market in my opinion.