Agency Arms Magazine Release Gen 3 Black. It features a serrated and enlarged face that is extended 3/64". They are machined from 6061 aluminum and MIL-A-8625 Type 3 Hard Anodized. Will not fit wide frames or single stack frames. Specifications for Agency Arms MR-G3-B Magazine Release Compatible With Glock Gen3 6061-T6 Aluminum: Mfg Item Num: MR-G3-B Supplier SKU: 47961 Category: FIREARM PARTS Finish: Black Hardcoat Anodized Type: Magazine Release Model: Glock Gen3 Material: 6061-T6 Aluminum Features of Agency Arms Magazine Release Compatible w/Glock Gen3 6061-T6 Aluminum: Direct replacement part enlarged serrated pad extended by 3/64" Machined from 6061 and MIL-A-8625 Type 3 Hard Anodized Package Contents: Agency Arms Magazine Release Compatible w/Glock Gen3 6061-T6 Aluminum The Agency Arms MR-G3-B Magazine Release Compatible With Glock Gen3 6061-T6 Aluminum is a quality addition to the Agency Arms lineup. For more great deals on AR15 Magazine Catches & Releases by Agency Arms please browse our Agency Arms Gun Parts page. Agency Arms 25MR-G3-B: Magazine Release Compatible With Glock Gen3 6061-T6 Aluminum