Barrel And Gas System Reassembly

1. Grasp the operating handle and lock the action in the "OPEN" position (Figure 15).

2. Install forearm retainer, gas system return spring, pusher assembly, spacer tube, gas piston, and seal ring onto magazine tube. Note orientation of seal ring. Angled surface of seal ring must face out.

3. Install barrel into receiver and over magazine tube. Continue to push barrel into receiver until fully seated. If barrel binds during assembly, slide gas piston forward, towards the gas cylinder, this should allow the barrel to seat.

4. Install forearm.

Gas Piston For Mossberg 935

Figure 15

5. Install magazine cap. Tighten cap hand-tight only.

Figure 15

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