https://greyhive.com/videos/watch/f2c44f23-3006-4af0-99eb-7bd7f8d59a32 Testing the Borebuddy 9mm No-Tune FRT Upper Receiver's bolt with deadblow weight with both a standard deadblow buffer and the Gentle Recoil System for blowback 9mm AR's. The GRS shows minor bolt bounce on high speed video. Although it works with FRTs in my tests, there is a slight risk of OOBD during rapid fire. On high speed video it appears that the BoreBuddy bolt's deadblow weight fixes the bounce entirely! It has a great set of features and is poised to become my go-to recommendation for a complete 9mm upper for both FRT and non-FRT use, which is something a lot of people have been asking for! I have no financial arrangements with any of the companies mentioned in this video. None of my videos are monetized in any way. I do not sell any products or services. I make no income from any of the work I do. 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. All guns fire in legally defined semi-auto only. 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 warrantied 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. Sat, 14 Nov 2026 00:59:07 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/f2c44f23-3006-4af0-99eb-7bd7f8d59a32 All rights reserved, unless otherwise specified in the terms specified at https://greyhive.com/about and potential licenses granted by each content's rightholder.