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Posted: 6/11/2023 2:11:03 PM EDT
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I have had a FM-9 in the box for longer than I should admit and finally got it out. Initially ran 10 round belts through it to ensure function but once I hooked up a larger belt or tried to run a 150 round bag the belt would pull apart. Specifically, the belt inside the feed chute would pull apart by stretching the single arm of a link out, causing the belt to separate. This was consistently at the point between 3 rounds or so and the rest of the belt. The links and upper were purchased in 2019. Ammo was S&B 115gr. Semiauto, standard strength buffer spring and buffer. I've emailed Freedom Ordnance but thought I check here first. Any help would be appreciated. |
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No, the belts are fine until I start firing the gun. It only happens when firing a longer belt or pulling it from a pouch. My guess is that it is a violent cycle advancing the next round against the weight of the belt/pull from the pouch. I've put in a red springco buffer spring and a heavy buffer weight hoping this will slow down the action but won't get to test it out until later this week. If it's not that then I may have a bad batch of links that are stretching out with the force of advancing the belt. Below is a link to a pic of a bunch of the deformed links and a single link that is normal. https://www.flickr.com/photos/198585921@N08/52966841432/in/dateposted-public/ |
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I like slow and smooth. I know it is straight blowback but this is the best I could do: I think some of the energy it takes to pull the belt does make it a little smoother than typical Colt 9mm straight blowback.  FM9 9mmKynshot A5 no weight |
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