CA M16 Series Hop-up Guide

[The Shootist]

I'm dealing with these particular guns because I know them the best.

The CA Hop-up sucks. It will ease back throughout the day and you will constantly need to give it small torques one way or another. This can be fixed by adding a small washer behind the adjustment gear. However, that doesn't always fix it.

The hop-up bucking, and nub that comes with the CA is very good, in my opinion. There is no real reason to replace either of those- again, in my opinion.

I have been trying a hard-nub, inside the Hop-up, and have found it is horrible, with a tightbore barrel. It causes jams, and misfeeds, and all sorts of crap. Don't try it, learn from my stupidity. ;D

I will be replacing the entire Hop-up, and the nub, of my CA M15a4 in the next three months, and I'll let you know what I figure out.

As always, take a look at this great site, for a bunch of information you probably never even thought to care about:

www.airsoftmechanics.com/

[ertgunner]

well personally i dont like the ca m15 hop up it makes a strange sound when you turn it up.. but other than the sound the performance is acutally fairly good

[The Shootist]

Historically, the CA M15a4 hopup is shite. You're the first to mention a noise. However, the backing-off problem is well documented. Maybe you lucked out and got one that doesn't back-off during the course of a game. In that case, awesome.

[prometheus]

pull the screw holding that adjustment wheel down and put a shim in, under the screw before replacing it.

this solves the problem you speak of every time.

[haslinger]

Buy a G&P hopup. Works like all airsoft products good enough.