The Mobile Suit Option Set 1 & CGS Mobile Worker set is a 1/144 scale High Grade IRON-BLOODED ARMS add-on kit released in 2015.
- 1 Smooth-bore Gun
- 1 Lance
- 1 Short-Barreled Rifle
- 1 Shield
- 1 CGS Mobile Worker
Kit Features & Gimmicks
- Smooth-bore Gun can attach to HG Gundam Barbatos.
- Both the Lance and Short-barreled Rifle can attach together to form a Lance-Rifle for HG Schwalbe Graze.
- The ammo pack from the Graze's rifle can be attached to the short-barreled rifle, and the joint piece can also be attached to the said rifle, albeit a bit loose.
- The Shield (with joint piece) can attach to HG Graze and it's variants (excluding Schwalbe Graze, Graze Ein, & Geirail).
Other Gunpla releases with the add-on kits
- HGI-BO ASW-G-08 Gundam Barbatos Complete Set (With the Smooth-bore gun & the Mobile Worker runner)
- HGI-BO EB-05S Schwalbe Graze (Gaelio Bauduin Custom) (with the Lance & Rifle runner)