The Easton Full Metal Jackets are about the closest thing to Beman MFX Classics.
Beman MFX Classic Arrow Specs:
340 - 11.2 gpi., uses 9/32" diameter field point, BAR6 Broadhead Adapter Ring
400 - 10.4 gpi., uses 9/32" diameter field point, BAR5 Broadhead Adapter Ring
500 - 9.7 gpi., uses 9/32" diameter field point, BAR5 Broadhead Adapter Ring
600 - 8.0 gpi., uses 17/64" diameter field point, BAR3 Broadhead Adapter Ring
Full Metal Jacket Arrow Specs:
300 - 12.0 gpi. uses 9/32" diameter field point BAR5 Broadhead Adapter Ring
340 - 11.3 gpi., uses 9/32" diameter field point, BAR5 Broadhead Adapter Ring
400 - 10.2 gpi., uses 17/64" diameter field point, BAR3 Broadhead Adapter Ring
500 - 9.1 gpi., uses 17/64" diameter field point, BAR3 Broadhead Adapter Ring