Service Manual

Page 20 – A.1
Modification Model V-350 – Slide Action BB Rifle:
The V-350-5 Pop Valve and V-350-12A Valve Spring have been changed to improve the operation of this rifle.
The original Pop Valve Spring had a tendency to unwind and get caught between the Pop Valve and the Barrel.
This condition has been corrected by modifying the V-350-12A Valve Spring.
It now has 2 solid and larger coils at each end. The center coils are smaller in diameter allowing the Spring to hug the Stem of
the Pop Valve.
The Pop Valve has been altered to reduce the shoulder height so that only the two solid coils on the spring work over the
shoulder.
Fillets have been added to the corners of the Pop Valve to increase strength, preventing fracture of part.
When necessary the old Pop Valve and Valve Spring V-350-12 should be replaced with the new Pop Valve and Valve Spring
V-350-12A.