https://greyhive.com/videos/watch/525521d6-0ac4-4c56-a233-cc5293d0d2e9 We had a bad bolt from the start! Turns out a 2.5" barrel WILL cycle 37.5oz. using 115gr. range ammo. But will it cycle 147gr? How about suppressed? This setup is using a standard 5.56 recoil spring. I forgot to mention it in the video. More information can be found at Blowback9.com. I wear ear plugs, or muffs, or both, in every 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 19:51:06 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/525521d6-0ac4-4c56-a233-cc5293d0d2e9 All rights reserved, unless otherwise specified in the terms specified at https://greyhive.com/about and potential licenses granted by each content's rightholder.