5
Fm-15 stovepipes
(forum.guncadindex.com)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 10 Nov 2025
5 points (100.0% liked)
Help & Support
183 readers
15 users here now
Post here if you have general questions concerning GunCAD, printing, or otherwise fabricating DIY firearms. Newbies are welcome, but users are encouraged to read Ctrl+PEW's Getting Started Guide if they haven't already.
Shitty stock image may be changed at moderator discretion.
founded 2 months ago
MODERATORS
How many rounds has this thing been through, what troubleshooting steps have you attempted, and how consistent is the malfunction? Does it happen with other magazines?
Somewhere in the ballpark of 500-800 rounds.
I stripped it cleaned it, checked for loose gas key, checked the gas block for alignment and being fully open, confirmed those are all good.
Checked springs and guide rod, those are good too.
Confirmed extractor pin was not broken, I did go ahead and swap the extractor with another FM one.
New extractor has really positive grab on the case, and flicks the round out well both handheld and cycling the action. Significantly harder to install due to spring pressure.
Have had a pretty wide range of mags through it, multiple pmag 30 and 20 round mags which are known good from other rifles.
Following up here for future people maybe.
Issue was resolved with an extractor, spring and bushing replacement
For those with an FM-15. The FM-15 gen 2 as of 2025 no longer uses a proprietary extractor pin.
Use standard, FA rated extractor, spring and pin (and rubber bushings)
No need to buy from FM or change the firing pin as on the early gen 2 models
This was confirmed by FM support