Parts Thompson Contender foregrip screw?

[BossHarley]

I need a Thompson Contender foregrip screw? Does anybody know the part number etc?
I purchased a contender used with the 22 bull barrel and a 17 HMR barrel, but am missing one of the screws for the foregrip.

 

[gemihur]

1/4"-20 x 3" hex head should do ya, might need some washers (Grip bolt to receiver's pillar)
Forearm screw to threaded dovetail = 10-32 x 1/2" or 3/4"