Just received this today, so I don't have many specs on it. Measures exactly 14" on my tape measure, and weighs 12.85oz with barrel nut and screws on my scale. SMOS Arms plans to release other lengths along with the 14. For those that don't know SMOS Arms makes quality OEM products for many brands you'd be familiar with.

I'll update this with more information as I get it.

http://www.smosarms.com/