Vintage/Factory Original Thermold (Twin Magazine Lock), Part # TML/20. Fit Thermold 20 Rd. Magazine Only, For AR-15/M-16, .223/5.56x45mm Cartridge. Note: (1) How Lock Fits Into Body Of Magazine & Locks-Up, (2) How To Disassemble Twin Magazine Lock, Product Not In Original Clam Shell Packaging. Material DuPont Zytel Nylon, Non-Corrosive. Date Manufactured Early 1990's, No Dings, No Scratches, Twin Magazines Lock In Excellent Condition !!! Note Magazine Are Not Included !!! OLD-BUT-NEW !!! Available (27) Price $5.95 Each !!! Manufactured In The Great U.S.A. !!! Please Look At All Pictures, Buyer Pays Shipping Cost , Ship Only In THE GREAT U.S.A. !!! Can Not Ship Outside Of U.S.A. Because Of Regulations ! Thanks For Looking At This Listing !!!