Did you loose the thumbscrew? Got it worn out and want a brand new one? This is what you're looking for. Please consult the below information to determine which length you need.
SSG10 / SSG24 Owners
For these we have historically used both lengths. To determine which length is needed, please inspect your nubs that came with your TDC 2.0 - pay attention to the rounded edges / corners as well to the depth of the hole where the screw sits.

VSR10 Owners
Action Army VSR10 Chamber version - 9.0mm thumbscrew.
What's included:
All orders are shipped from Latvia. Delivery time is usually 1-5 weeks for Flat Rate. Shipping starts at around 7.00€ internationally.
Express option is also available which is Fedex Economy or similar. Deliver time is usually around 1 week or less.
All orders are processed within 1-3 working days. You will receive an e-mail with tracking number once the order has been shipped.