90 Rounder review by Tactical Life: http://www.tactical-life.com/gear/the-mwg-90-rounder-ar-15-magazine/
The MWG 90 Rounder high capacity magazine for the AR-15/M16 provides you with the finest in state-of-the-art high capacity magazine design. The 90 Rounder's innovative snail-drum design and advanced space-age materials are combined to create a very light, completely reliable, low maintenance, high capacity magazine that will withstand a level of heavy field use that would destroy a metal magazine, while weighing 33% less.
The 90 Rounder for the AR-15/M16 is designed for 5.56mm NATO or .223 Remington ammunition.
The 90 Rounder for the AR-15/M16 is designed to be close to maintenance free. Never remove the silver-gray Teflon lubricant powder. Never Use any oil-based lubricant. Never disassemble MWG products, and never disassemble the 90 Rounder for the AR-15/M16 .
The 90 Rounder for the AR-15/M16 contains small parts & springs that may cause injury if improperly released. If repairs are required, return the magazine to MWG Company for repair. Any disassembly, alteration, re-adjustment, improper installation, or misuse of any MWG product voids all warranties.
Never attempt to load the 90 Rounder into the weapon or detach the 90 Rounder for the AR-15/M16 from the weapon, with a cartridge in the chamber. Always lock the bolt back first and visually ensure the chamber is empty.
Because of its unique design, the 90 Rounder for the AR-15/M16 can be left partially loaded for an extended period of time, but never store the 90 Rounder with more than 80 rounds loaded. Leaving the 90 Rounder for the stored with more than 80 rounds loaded may damage the springs and cause the weapon to malfunction. Never attempt to load more than 90 rounds. Loading more than 90 rounds may damage the magazine.
The 90 Rounder for the AR-15/M16 must generate energy to reliably feed ammunition into the receiver at a consistent rate. As the magazine grows full, more energy must be exerted to load additional rounds. This energy is stored in a special spring & released to move the entire ammunition load during firing. It takes a lot of energy to reliably move 90 rounds of ammunition, and so it takes a lot of energy to load those same rounds. As the magazine nears capacity, the final rounds may require substantial energy to load.
5.56 mm (.223 Rem) 90 Rds
7.75" (Only 3/4" longer that the standard 30 Rd. Magazine)
For Use In:
The M-16 family of firearms to include: M-16, AR-15, M-231, Port FiRings, etc,
High capacity magazines are illegal to possess in some cities, counties, and states. Check with you local authorities to ensure it is legal for you to possess the 90 Rounder .
This item cannot be shipped to: CA, HI, NY, NJ, MD, MA.