https://greyhive.com/videos/watch/ac069447-0db6-40f6-a0a5-74db0b0cea1d I tested 34 different buffer setups for bolt bounce, including the Gentle Recoil System, Maxim RDB, deadblow buffers, and heavy solid buffers. 11 different buffer configurations, 3 different recoil spring strengths each, plus the Maxim, with 5 high speed recordings each. This took over a month of work to put together. 3:50 Trial 1-3: 5015HD GRS 5:35 Trial 4-6: 5007 GRS 7:20 Trial 7-9: 5000HP A5 GRS 9:05 Trial 10-12: 5005 A5 GRS 10:50 Trial 13-15: K-SPEC A5 GRS 12:35 Trial 16-18: 11oz. dead blow 14:20 Trial 19-21: 11.5oz. solid 16:05 Trial 22-24: 12.8oz. (7.8 solid + 2 Kynshot weights) 17:50 Trial 25: Maxim RDB carbine 18:25 Trial 26-28: 5015HD Competition GRS 20:10 Trial 29-31: 8.4oz. dead blow 21:55 Trial 32-34: 9.5oz. K-SPEC Every configuration appeared to experience some minor bounce, EXCEPT the 11oz. (10oz.) KAK Industries deadblow buffer and the Maxim RDB. This was regardless of using a high dampened or standard dampened hydraulic buffer, carbine, light or XP spring, or even the K-SPEC with dead blow weights intended to reduce bolt bounce. The good news is that the bounce wasn't severe, but it was noticeable on high speed video. 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 19:14:20 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/ac069447-0db6-40f6-a0a5-74db0b0cea1d All rights reserved, unless otherwise specified in the terms specified at https://greyhive.com/about and potential licenses granted by each content's rightholder.