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The Otis Technology AR-15 Lock Block | PRO+ AR-15 Lock Block - Upper Receiver Vice Block | Made in the USA
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The Otis Technology AR-15 Lock Block | PRO+ AR-15 Lock Block - Upper Receiver Vice Block | Made in the USA
If shooting a gun without ear protection will damage your ears, about how many times before you notice hearing damage would shooting an AR-15 at the range without protection take? - Quora
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