Thermold AR-15 223 20 Round Magazines are tough and reliable in the field. The best thing about these
magazines is the ability to resist dirt build-up and resists heat.
Constructed out of nylon for great durability in the field to forgive a
costly mistake like dropping it out of a stand. These non-corrosive and
self lubricating magazines will keep feeding your rifle through the
heat, cold, rain, or snow. The heavy duty construction does not have any
exposed screws or springs.