The second magazine is a mid capacity magazine capable of switching capacity from 30 rounds of real capacity to 130 round mid capacity size with a switch on the magazine housing

5 RONIN 10 SBR FEATURES:

pre-installed 6" CNC machined M-LOK handguard included

It enables you to achieve a faster trigger response

6v Small Type NiMH / 7

G&P 140rd Short Skull Frog Hi-Cap Magazine for M4 / M16 Series Airsoft AEG Rifles (Color: Black) LAY LAX The second magazine is aColor: Black G&P high rate of fire feeding magazines are the highest rated magazines for both reliability and performance, boasting the smoothest feeding and fewest skipped rounds. G&P M4 magazines are the only magazines you can trust to keep the rounds flowing down range. Features: Hard polymer construction High tension feeding spring Skull frog stamped body Compatibility: For TM, G&P, Matrix, G&G, ICS, VFC and other compatible M4, M16, SCAR, L85