I've had that Corsair for about a year now (got it as a gift). Historically, their were no F4U-1As serving in the fleet by 1950, only F4U-4s and F4U-5s. If they had revised the cowling and added a four-blade prop, they might have been able to pass it off as an F4U-4 despite having the older -1A canopy.
Still a nice model tho. I've been meaning to pull out the airbrush and re-do the markings to that of an F4U-1A circa 1944-45 vintage.
My regards,
Widewing