125rnd Capacity
High density polymer construction
Compatible with most M4/AR-15 AEGs
 
Whether you use a Specna Arms M4/AR-15 AEG or need affordable M4 mid-caps to expand your firepower, the 125rnd S-Mag Mid-cap is what you need. This magazine is constructed from high-density polymer with a steel feed spring and is loaded through the fill/feed port at the top of the magazine body, just like other mid-caps.
The S-Mag is compatible with the vast majority of M4/AR-15 AEGs and should also fit most 416, SCAR-L and L85 AEG replicas. Being a mid-cap, this magazine won't give you away with the dreaded battle rattle as you run and is ideal for sneaky skirmishers looking for more capacity!