I'm not sure currently, they brought it back in .308 a little while back to see if it would sell better in a lighter load than the original. The vent rib was plastic on the "new" ones
There have been several re-incarnations in various model numbers.
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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”