Can a .223 Remington FMJ round penetrate an aluminum engine block? How about a cast iron block? - Quora
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Amazon.com: Lyman 7833034 Comprobador de municiones de bloque múltiple .223 Rem, multicolor : Deportes y Actividades al Aire Libre
![Springfield Armory Saint Picatinny Gas Block 223 Remington/5.56 NATO AR15 Semi Auto Rifle | ST916556BM | Blue/Black, 16" Barrel, 30 Rounds, Synthetic, 3-position adjustable Stock - Buds Gun Shop Springfield Armory Saint Picatinny Gas Block 223 Remington/5.56 NATO AR15 Semi Auto Rifle | ST916556BM | Blue/Black, 16" Barrel, 30 Rounds, Synthetic, 3-position adjustable Stock - Buds Gun Shop](https://www.budsgunshop.com/images/imagecache/415007900_sm.jpg?v=1)
Springfield Armory Saint Picatinny Gas Block 223 Remington/5.56 NATO AR15 Semi Auto Rifle | ST916556BM | Blue/Black, 16" Barrel, 30 Rounds, Synthetic, 3-position adjustable Stock - Buds Gun Shop
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