Rhineland Arms began making adapter kits for FN FAL rifles in the late 90s and added the Mauser 45acp kits shortly after. The Mauser kits have been in near constant production from that point on with few changes.

45 acp Kits

FG-56

45 acp Kits

1911 45acp

$645.00
$10.00$198.00

45 acp Kits

Sub Zero Ruger 1022

$35.00$120.00