Sylvan Arms ARFM100: This fantastic Sylvan Arms Flared Magwell allows the shooter to conduct reloads significantly faster and without looking. This model features an integral trigger guard for maximum security, and broader flare than most competing products, the Sylvan Arms Flared Magwell is one of the best on the market to date. This Magwell is machined in-house from billet 6061 aluminum and designed to fit most of the AR-15 platforms on the market. This product, like all other Sylvan Arms products, is also backed by the Sylvan Arms Limited Lifetime Warranty. Note: This model is only compatible with lower receivers that feature an open trigger guard. Sleek Design with super-wide mouth diameter allows for faster magazine reloading Low light/ no light magazine changes Machined in-house in the USA from billet 6061 aluminum and designed to fit a variety of platforms Easy installation in less than 15 minutes Works with Most AR-15 Lowers with Removable Trigger guards Sylvan Arms Limited Lifetime Warranty