MAGPUL – PTS RM4 ERG Magazines, designed for the KWA / MAGPUL PTS RM4 ERG these magazines can be switched from a 30rnd to 60rnd capacity in under a minute.
This magazine will literally stop your RM4 from firing once empty due to the clever mag empty lever on the back as seen in the photos.
Excellent build quality inside and out and can handle several very high drops. Ideal for the Air softer who is trying to get the most realistic and reliable shooting experience from their compatible RIF.
Features:
-Cut Off Switch Back
-30 To 60rnd Switch
-Strong PMAG Polymer