juplin

Its rugged body is machined from high-strength aerospace aluminum that's Mil-Spec hard anodized.

而它堅固耐用的筒身是用高強度的航太鋁合金所製成,並施以Mil-Spec(密爾,千分之一英寸)的堅固電鍍層

Mil-Spec hard anodized 應該是 "軍規硬陽極氧化層"
Mil-Spec 是 Military Specification（軍規）的簡稱。

P.S. 估計是為"統治者"準備