Magazine Spool Cover
MILSIG Magazine Spool Cover is new 20rnd magazine upgrade which reduces FTF (Failure to Feed) problems. It avoids a follower getting stuck when spool is not winded or released properly. It makes a magazine more reliable during field use.
Please note that all new magazines (made in 2012 or later) comes with the Spool Cover.
It is not compatible with 18 rnd magazines (made in 2008 or sooner) which doesnot have steel winder pins.
Installation video can be seen below:
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