5KU STI Aluminium Magwell - Black slow-mover 20mm Picatinny railed receiver -

20mm Picatinny railed receiver - Ready for a red dot sight or scope

Estimated 10-15% efficiency improvement

Introducing the latest and most attractive grips on the market

The Full Auto Only brand have been around since 2020

Compatible with: Acetech Lighter S

5KU STI Aluminium Magwell - Black slow-mover 20mm Picatinny railed receiver -The 5KU Magwell is a must have for all the competition shooters out there that uses the Tokyo Marui Hi Capa series, no matter it's 4. 3 or 5. 1 this would fit your standard grip and improves the entry angle of your magazine, making it a breeze to reload. *Only fits Tokyo Marui Hi Capa 4. 3 and 5. 1 series with original grips.