Recent content by 308AR

This got me thinking about the shapes of these feed ramps. Looks like the M&P 10 has 5 squared off ramps and 3 angled ramps. I went over to my office and got my small camera (think teeth...) and tried to get some images of the barrel and feed ramps. Not that easy. Here's one that shows them...

Thanks again, good photo. I need to have a good look in there and be sure of what I'm polishing before removing the barrel. It would be worth it if I was sure of what and where I was polishing. Will work on that and post results. I'm sure that's what is causing these marks. Machining...

Thanks Tinhack. I have some good magnification lenses (comes with being a Dentist who, at over 65, needs the extra magnification!) and should be able to get in there and see what's happening. Also some good photo lenses from work that can show it. If I find anything worth posting will do so...

Thanks for both comments, seems to happen with both the factory steel mag and the magpul mag, have to check that again. If it's the feed ramps have to assume there is a bur somewhere. Will look there next. That extractor spring seems really strong, anyone modified it or changed the factory...

I've had my M&P 10 for a year and a half or so, I have no feed or injection issues, if functions very well. It has a Magpul PRS stock and once I got the buffer spring and buffer worked out it's extremely smooth. I am getting, on every round, these marks. It's hard to get a good photo of them...

I've had this M&P 10 for a year an a half or so, shot it quite a bit but with limited time to get to the range, probably not nearly as much as most others here. I shoot only reloads, the rifle has a Magpul PRS stock, mono-pod, Midwest Industries hand guard, harris bi-pod and cheapest Vortex...