The 1959 Airsporter Mk2 And Meteor Mk1 are the first airguns ever offered with scope mounting dovetails! 15.5mm dovetails. Unfortunately the plastic scope BSA first offered (shown) is the biggest piece of crap to ever adorn ANY gun. All plastic except the fixing clamp and screws; When you sight the gun in the crosshairs move in the scope view. No telling how far off center it will be when properly? adjusted. The turrets are plastic junk. The whole scope seems like it was built for a "made in Japan" child's toy that would have been purchased from a five and dime store (younger guys think "made in China from Toys are Us"Lol!)..This is the poorest example of a scope ever offered anywhere for sure. The Mk2 Airsporter and Mk1 Meteor (THE best Meteor ever made eventually becoming a real crappo junker as imported by Ithaca in the 70's. Later somewhat redeemed by some OKish subsequent models ) are fine airguns in their own right. They certainly deserved something better. I have one of the scopes around here somewhere. It came on one of my Mk2 Airsporters. It really does look like something you could get at Walmart for $3.95 to mount on a $4.95 plastic cap gun rifle for a last minute Dec 24 at 12:30pm 7year old Christmas gift after the shelves are picked bare instead of feeling guilty for showing up empty handed.
The Mk1 Airsporter (released in 1948), Mk2 Airsporter (1959-65) are beautiful rifles. The Mk1 Meteor is like a British Diana 27. A little gem.