From “Gundam Build Divers Re: RISE” comes option parts to arm up your Gunpla! You can add this expansion to the Gundam Tertium to make it the Gundam Advanced Tertium, or add it to other 1/144 kits via the adapter backpack. Tertium Arms is comprised of the long beam rifle, 2 half shields, and the huge booster. The long beam rifle is equipped with a gimmick to transform it into a stowed state. You can also combine it with the folding shield from the HG Seltsam arms to make a massive beam rifle. The half shields can connect to form one large shield or can attach to the huge booster. Package contents are runner x 2, foil sticker sheet, and the instruction manual.