unless the thumb is drilled extra deep it should not be a problem. They will need to drill out the old slug and install the ball-it and top sleeve
Arsenal: Mega Friction,Aftermath, Bank, Break Point,Break Point Pearl,Sideways x2,Profit, Clutch Pearl,Maniac x2,Lunatic x2,Heist Pearl,Link,Hype urethane,Epicenter, Desperado,Mars, Grenade Pearl,T-Zone
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