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johnchip's Review of Aero Precision M4E1 Threaded Bolt Catch Pin
I bought the Awro Precision M4E1 Threaded Bolt Catch because I have a few M4E1 lowers and I think it is always a good idea to have extra parts for them. I stripped one by accident and having an extra in my spare parts box was a life saver.
Would Recommend:
Yes
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