This guide details the installation and use of the ATI .410 AR Upper, transforming a standard AR-15 lower into a .410 shotgun. It covers magazine options, choke systems, and shooting experience, noting the unique nature of this conversion. The video features an experienced instructor from GBGuns demonstrating the product's features and compatibility with any AR lower.
This video tests the durability of Cryptic Coatings on an AR-15 bolt, specifically the cam pin and extractor, after 300 rounds of steel-cased ammunition in harsh conditions. The extractor coating held up well, showing no visible wear. However, the cam pin coating exhibited signs of wear, with some material appearing to have sheared off.
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