This is the Mec-Gar Springfield Hellcat 9mm 14-round magazine. 

Mec-Gar delivers an additional round over the extended OEM Hellcat magazines without adding almost any weight or size!

You’ll quickly notice the white polymer base pad and follower, which help keep the weight down without sacrificing durability. Additionally, the heat-treated steel magazine body features an anti-friction coating to maximize its reliability.

Rear-facing witness holes are precision cut for quick and easy capacity assessments, helping these magazines successfully handle any task at hand.

Don’t settle for the standard 13-round extended Hellcat magazine when you can grab a few of these 14-rounders!