Rainier Arms 45/90 Degree Selector Compatible Lower Receiver
Rainier Arms has just introduced their newest forged lower receiver compatible with both 45 degree and 90 degree safety selectors. Their lowers are made to mil-spec and machined from forged 7075 aluminum. Also features a tension screw, to help reduce any play between the lower and upper receivers, and a flared magwell to aid in quicker reloads.
You can grab the lower here: Rainier Arms 45/90 Degree Selector Compatible Lower Receiver.
For those that are interested or curious as to what a 45 degree selector is, check out our review of the Battle Arms Development BAD-CASS.