An upgraded form of MBF-P02 Astray Red Frame developed by Lowe after his first encounter with LN-GAT-X207 Nebula Blitzs, the major change to the suit is the replacement of the Red Frame's backpack with Tactical Arms IIL and its mount. Besides the two head-mounted "Igelstellung" 75mm multi-barrel CIWS, Tactical Arms IIL and "Gerbera Straight" katana, Red Frame Kai is also equipped with "Tiger Pierce" Katana. It no longer uses the physical shield and the beam torch component of Tactical Arms IIL replaces the Type 71 beam rifle.

Like MBF-P03R Gundam Astray Blue Frame 2nd Revise's Tactical Arms II, Tactical Arms IIL can also transform into multiple forms, with each form granting Red Frame Kai unique abilities. Compared to Blue Frame 2nd R's Tactical Arms II, Tactical Arms IIL only retains the Sword form and a slightly altered Flight form. The other 4 forms, Arrow form, Work form, V form and Delta form are new.