Gunplas are fantastic models, that can be displayed in many dynamic poses. Being mechanical objects, they must include the typical mechanisms, grills, plates, etc. we typically associate with them.
Most kits don't include such details out of the box, so getting them as aftermarket parts is a great opportunity to enhance your models and make them stand out from others.
Pick the ones you would like to add and start building!
We have to prepare each shipment individually as they are ordered, so allow it in 3-4 weeks to arrive in the USA/Canada (to be safe) and 3-6 weeks rest of the world, though they are usually delivered much faster.