FN Five Seven 5.7x28mm Gen 2 10/20 10Rd or 15/20 15Rd Blocked Mag CA,CO,CT,IL,MA,MD,NY,NJ,VT Legal Magazine

We modify OEM FN mags to be permanently blocked to 10 rounds from an original 20 round magazine. Our modification actually makes the magazine easier to open for cleaning than it was originally. We remove the ribs on the body of the magazine that were used to secure the base in place and convert the base to a locking peg system. This allows you to open and clean the magazine without the aid of a c clamp or special tool. In doing this our blocked magazine is considered permanent and does not require to be sealed because of the fact that an original base will no longer stay on without the block inside.

• OEM FN Mag Gen 2
• 10/20 10 Rounds or 15/20 15 Rounds
• 5.7x28mm
• Black
• Country Spirit Made polymer Block

For a 17rd blocked mag just add a note or email us after ordering.

Mags shipped to NY, CO, CT, DE, IL, MA, OR, RI, WA, VT & DC will have the base sealed shut with epoxy and a rivet to fully comply with the laws there.

** Oak Park IL is a 10 Round Limit on Magazines

For states that do not require the base sealed shut we can still epoxy it shut on request free of charge. Just let us know you would like it done.