United Defense M3 Grease Gun 10/30 10Rd Blocked Magazine

CA, CT, CO, IL, MA, MD, NY, NJ, RI, WA,VT and DC Legal

Our 10/30 and 15/30 blocked mags are brand new United Defense M3 Grease Gun Magazines. We block them with an Polymer block designed by us here in our shop that changes how the base plate is held on the mag. Originally you had to lift the rear of the base plate to allow the indents to clear the mag and the base could be removed. Our blocking system changes that to a button style system. Once done the block is required to keep the base plate in place. For states that require mags to be sealed we use an internal Poly block then epoxy and rivet it to the base of the mag.

Our 10/30 mags are California, Connecticut, Massachusetts, Maryland, New Jersey, New York, Rhode Island, Washington, Vermont and DC Legal.
Our 15/30 mags are Colorado and Illinois Legal.

• New United Defense Mag
• Steel body
• 10 or 15 Rounds
• 10/30 or 15/30
• .45 ACP
• For 15rd Mags if your area allows them just add a note or email us after purchase.

Mags shipped to NY, CT, CO, IL, MA, 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.