Re: British 303
JLA - I WAS going to dis-agree with you, but I did check their sales list, and danged if you are right! That after-market mag looks just like the Ishapore conversion mag in 7.62. So it COULD be a .303.
Why the heck anybody would prefer that one over a standard mag is beyond me. Everybody's taste is different. You can get a decent used one for about the same price.