Guns.com took a look at this ultra-light lower and upper set. Both sets weigh total of 12.35 ounces, which is far less than 18 - 20 ounces for standard forged lower.
http://www.guns.com/2014/05/09/check-out-this-ultralight-balios-lite-receiver-set-by-2a-armament/
Fom: Guns.com
