This is a Bandai HG 1/144 GUNDAM G-SELF PERFECT PACK

The HG 1/144 GUNDAM G-SELF PERFECT PACK is a high-quality plastic model kit of the Gundam G-Self, the protagonist mobile suit from the anime series Mobile Suit Gundam: 

Key Features:

High-Quality Construction: Bandai is known for producing high-quality model kits with intricate details and snap-fit construction.
Detailed Recreation: This kit accurately captures the distinctive design of the Gundam G-Self in its Perfect Pack configuration.
Enhanced Mobility: The kit features a high degree of articulation, allowing for dynamic posing options.
Versatile Weaponry: Includes various weapons and accessories, such as beam rifles, shields, and the iconic "Messiah" beam cannon.
Snap-Fit