Removal of recoil buffer and action spring – SIG SAUER SIGM400 Rifle User Manual
Page 59
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7.4. Removal of Recoil Buffer and Action Spring
REMOVAL OF THE RECOIL BUFFER AND SPRING IS EASIER IF THE
HAMMER IS IN THE COCKED POSITION AND THE FIRE CONTROL
SELECTOR IS ROTATED TO THE SAFE POSITION. ALWAYS WEAR SAFETY
GLASSES WHEN HANDLING PARTS UNDER SPRING TENSION.
1. Depress buffer retaining plunger while maintaining control the buffer
as you allow it to move forward from the receiver extension tube.
FIG 37 PICTURE OF THUMB OVER BUFFER ASSEMBLY
2. Guide the buffer and action spring from the receiver extension.
3. Use a clockwise twisting motion to separate the action spring from the recoil buffer.
Do NOT pull straight back on the action spring as it can cause damage to the spring.
FIG 38 BUFFER AND RECOIL SPRING REMOVAL
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