● The Premium Extra Power Magazine Spring for Benelli M4 and Benelli M1014. Best Fit in 7 Round Mag Tubes. Follower and magazine tube not included.
●If you've upgraded your Benelli M4/M1014 from a 5 to a 7 round tube and are experiencing failure to feed, it is likely caused by the weak or worn OEM spring. Upgrading to the high power mag spring will be the solution to this problem most of the time.
● The upgraded magazine spring is designed and tested specially for the Benelli M4. They are manufactured in the USA with over 60 years of experience in spring manufacturing.
●If you are looking for a lower cost alternative to our Wolff Benelli M4 mag spring offering, this is the spring for you.