https://greyhive.com/videos/watch/cc1791c1-bcbe-4ed2-bebe-3252c0a2a6e7 Sylvan Arms AR-15 Glock Conversion Block. Glock magazine adapter for AR-15 lowers. I did not have good luck with this one, but maybe you will! I was unable to use the top installation screw that prevents the adapter from dropping out of the mag well if the receiver mag release is pressed, due to interference with my uppers. The upper would not close and would have required machining. After the initial 15 rounds, I was unable to get it to feed correctly, even with a Glock brand magazine. The 16" barrel did have an enhanced feed cone for improved feeding. Pros: Inexpensive compared to other adapters. Easy to install/remove (one screw). When it works, it seems to work just fine and eject well. Cons: Mag release is exposed and could be accidentally activated. Locking screw may interfere with lower. Chews up the magazine's over insertion shelf. Seems to need to be set "just right" to feed reliably. No way to lock it in position in the mag well. Can be over inserted in the mag well. YouTube Compliance: This video is not sponsored and does not contain paid promotions. All magazines in use hold under 30 rounds. All firearms are semi-auto only. All products shown are lawful to own. This video is an artistic production. I wear ear plugs, or muffs, or both, in every shooting video. Disclaimer: Blowback9's videos are filmed at a private shooting club in a controlled setting under the supervision of trained professionals. Blowback9's videos are for entertainment purposes only. Do not try to recreate or mimic anything seen in Blowback9's videos. Do not act in any way based upon any of the information found in Blowback9's videos. The accuracy of the information in Blowback9's videos is not guaranteed or warranted in any way. You, and only you, are responsible for the consequences of your actions. By watching Blowback9's videos you agree that we will not be held liable for any injury to yourself, others, or property resulting from attempting anything based on what is shown or described in these videos. Tue, 10 Nov 2026 19:05:35 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://greyhive.com https://greyhive.com/lazy-static/avatars/5746210d-885d-44b2-9be0-92bf1e4d34df.webp https://greyhive.com/videos/watch/cc1791c1-bcbe-4ed2-bebe-3252c0a2a6e7 All rights reserved, unless otherwise specified in the terms specified at https://greyhive.com/about and potential licenses granted by each content's rightholder.