It's a bird! It's a plane! It's actually both as well as a shield booster! They also provide a railgun and a beam gatling cannon!
Note: the Amazing Lev A and D are posed with the HGUC Hi-Nu Gundam for the purposes of this post!
Amazing Lev A
Bundled with the February 2015 issue of Gundam ACE magazine.
Amazing Lev D
Bundled with the April 2015 issue of Dengenki Hobby Japan.
HGUC Hi-Nu Gundam with Amazing Lev A and Amazing Lev D Weapons