Midwest Industries Long Picatinny Rail, Fits Standard Handguard, Black MCTAR-03 Midwest Industries Long Picatinny Rail Forearm Mount will fit AR series handguards with large or small holes. Midwest Industries is a proven leader in the firearm industry. Made in the USA" focusing on the small details to make your rifle platform better. The addition of their rail sections to your rifle platform creates the rail space you need to add your accessories.