I find this a little bit hard to believe. Airsoft guns are notoriously inaccurate, because the bbs are extremely easy to affect. Anything from a bit of dirt in a barrel, to a small amount of wind, to simply the inacuracy inherent in a little plastic ball flying down an unrifled barrel can lead to even the better marksmen missing what SHOULD be an easy shot. Putting a bb exactly where you want it (within milimeters) is impossible unless you're point blank.

Also, clips are not magazines. There's no such thing as an airsoft gun that uses clips.