BudsGunShop.com - Is this rifle a version 4?

Robin, since the members here are Customers as well and this would depend on date of manufacture, you will need Buds Customer Service to confirm this with their Inventory Dept. at 1-859-368-0371 9am-9pm EST Mon-Fri. or use the Blue Chat now button at the bottom right corner 9am to 9pm Mon - Sat and 9am to 7pm Sunday.

I would imagine it is just because of how high demand is right now for firearms that I doubt it's an older model but the only way to find out for sure would be to contact buds customer service at 859-368-0371 Monday thru Friday 9am to 9pm. Sorry couldn't give a definite answer but hope this helps.