This the H&K 30 round polymer magazine for the HK416 & MR556, also fits AR-15, L85 and other STANAG format rifles.
Manufactured at the HK Obendorf factory the magazines feature a tough glass reinforced polymer body with diagonal grip textures, round count indicator windows in both the sides and rear of the magazines and a stainless spring.
The magazines are available in three colours to match HK416 & MR556 furniture: black, green brown and sandy brown.