Remington 500V - Manual (Page 18)

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Tool Disassembly
Figure 2 - Removing Key Stop
Key Stop
A. REMOVING BARREL ASSEMBLY
1. Using screwdriver, lift end of annular spring and rotate spring until key stop is
uncovered (see Figure 1).
WARNING: Always unload a powder actuated tool before disassembling,
replacing barrel, cleaning, or assembling.
6. Pull piston assembly, using moderate force, from barrel (see Figure 4).
3. Firmly grip and pull barrel assembly from the outer liner assembly.
4. Unscrew muzzle cap.
5. Pull plastic buffer out of muzzle cap (see Figure 3).
Figure 3 - Separating Barrel Assembly from Housing
Muzzle Cap
Plastic
Buffer
Barrel
Assembly
Piston
Figure 4 - Removing Piston Assembly from Barrel
Figure 1 - Rotating Annular Spring to Uncover Key Stop
2. Push key stop towards rear of tool and remove (see Figure 2).
Outer Liner
Assembly
Annular Spring
Key Stop
Piston
Assembly
Barrel