http://palmettostatearmory.com/index.php/ar-15-05/lowers.html
I see all these different lowers but I'm not sure which are mil-spec. and which aren't (i.e. I assume the "mil-spec diameter receiver extension" is meant to sound mil-spec but is not explicitly so). Could someone help me?
Please let's not turn this into a love/hate PSA thread or get super technical as to what exactly is mil-spec. When I say mil-spec. I mean "follows or exceeds TDP as closely as possible" (think BCM, DD, etc.).
I see all these different lowers but I'm not sure which are mil-spec. and which aren't (i.e. I assume the "mil-spec diameter receiver extension" is meant to sound mil-spec but is not explicitly so). Could someone help me?
Please let's not turn this into a love/hate PSA thread or get super technical as to what exactly is mil-spec. When I say mil-spec. I mean "follows or exceeds TDP as closely as possible" (think BCM, DD, etc.).