Here’s links to help you build your own:
CZ Scorpion:
HBI Parts: https://hbindustries.net/store/product-category/cz-usa/cz-scorpion-evo-products/
Holosun Optic:
Innovative Arms Suppressed Barrel: https://www.innovativearms.com/portfolio/scor-integral-cz-scorpion/
Pistol Brace:
30 Round Magazine:
For those asking how much it all costs:
IASC Scorpion: $1,850 https://innovativearms.com/portfolio/scor-integral-cz-scorpion/
Tax Stamp: $200
Heat shield :$139 https://shop.innovativearms.com/product/iasc9-heat-shield/
Holosun: $200 https://www.amazon.com/HOLOSUN-HS503GU-Circle-Micro-Sight/dp/B01E4SQG4W
HBI Trigger: $34 https://hbindustries.net/store/shop/cz-scorpion-evo-3-theta-forward-trigger/
HBI Spring Kit: $9 https://hbindustries.net/store/shop/cz-scorpion-evo-3-s1-reduced-weight-trigger-spring-kit/
HBI Safety: $28 https://hbindustries.net/store/shop/cz-scorpion-evo-3-ak-style-safety-selector/
HBI Mag Release: $44 https://hbindustries.net/store/shop/cz-scorpion-duckbill-mag-release-lever/
HBI Charging Handle: $35 https://hbindustries.net/store/shop/cz-scorpion-prostock-charging-handle/
Yeti Grip: $40 https://hbindustries.net/store/shop/cz-scorpion-yeti-wurks-grip/
Total cost $2,579