Promag Fn 5.7 Usg 30rd Blk

ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturers defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality.

Features :

• 20 - Round Capacity
• 20 Round body plus 10 Round Extension
• Precise Manufacturing
• Long Term Reliability
• Durable Polymer Construction