Making the T97 more Reliable (Update #118)
- Thread starter t_102
- Start date
I had 3 ftf with lar15 mags only, the 200 rounds through the pmag no issues.
Making the T97 more Reliable (Pics)
I think the main point is to remove the flat part right under the feed ramp, which the bullet always rams into, stopping the whole cycle. I believe any angle would work good enough, the closer to the feed ramp's angle the better. This may be limited by your file's size (You still need to fit it into the magwell).
So in this part, you just bevel the outline edge about 45 degrees or am I missing something?
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I think the main point is to remove the flat part right under the feed ramp, which the bullet always rams into, stopping the whole cycle. I believe any angle would work good enough, the closer to the feed ramp's angle the better. This may be limited by your file's size (You still need to fit it into the magwell).
Aftermarket magazines have had their problems in semi's since the dawn of time. I would much rather try to modify a $20.00 mag than f..k up a $1000.00 rifle. No problem with my T97 with several branded metal mags also no problem with early Pmags.
I see your point… But what he's done is made it more workable with any magazine, at this point he's making the rifle more reliable with any magazine so you don't have to worry as much about which magazine you're using... Smarter in my opinion. How many AR 15 feeding ramps have I polished? I have no idea, but quite a few!
So in this part, you just bevel the outline edge about 45 degrees or am I missing something?
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Inside your red box is the feed ramp. As the rifle comes from the factory, it is flat from one side to the other. In the photo above there are 2 "notches" filed into the bottom edge of the feed ramp, one on the left side and one on the right side. These are the 2 shiny silver parts inside the red box. These are what I am calling mini "M4" cuts. Once these 2 notches are made it doesn't matter how the mag sits in the magwell. It WILL feed. Some guns (not all it seems) are having issues with the magazine having to much front to back play. This lets the front of the mag drop down just enough that the bullet will slam into the front of the magwell on occasion, instead of hitting the feed ramp and sliding into the chamber. All these notches are doing is extending the bottom of the ramp down far enough that the bullet tip goes up the ramp no matter how the mag is sitting. I would imagine that beveling the whole bottom edge of the ramp would work as well, but as the bullet only contacts it in these 2 specific spots I se no reason to file the whole bottom edge. Clear as mud?
There is a difference between polishing and the use of a flat bastard file.............
The mag is not the problem. The problem is the magwell that is a little too long. SOME guns work fine out of the box. Others seem to have a little too much front to back play. If you are not comfortable doing this, DON'T do it. If you know what you are doing and why, AND if you go slowly, there is no reason why you can't make a good thing better.
- Location
- Southern ontario
80 rds from an lar mag none of this bs has happened
Thank you gentlemen.. So the 2 notches are so whichever the side of the mag the round starts at, the bullet tip will get into one of those notches and feed into the chamber? My only other semiauto rifle is an SKS and say what you will of it, I've never experienced feeding issues 
Try modifying it to take a round it wasn't originally designed for and use a different magazine than it was designed around and see how well it works!
We need to remember that the T97 wasn't designed around the 5.56 cartridge or the AR magazine. Does it work pretty well considering? Yup. Is it worth a little tweaking to to have a relatively inexpensive, non restricted semi auto bullpup chambered for the 5.56 cartridge and the ability to use 10 round pistol mags or 15-17 round Beowolf mags?
HELL, YES!!!
We need to remember that the T97 wasn't designed around the 5.56 cartridge or the AR magazine. Does it work pretty well considering? Yup. Is it worth a little tweaking to to have a relatively inexpensive, non restricted semi auto bullpup chambered for the 5.56 cartridge and the ability to use 10 round pistol mags or 15-17 round Beowolf mags?
HELL, YES!!!
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I wouldn't hesitate to do a slight modification to a Norinco rifle or pistol. No point living with a poor design if it can be easily fixed. Pretty sure the finish in your magwell isn't going to remain unblemished... unless of course you don't use your rifle.
This got me thinking about not getting one, there is so much proven design rifles, you make adjustments on a 20.00 slingshot not a 1000.00 rifle even if this is not much money compared to a 3000.00 one, this is hardly acceptable... In my book that is... JP.
How about a 50 year old platform?
http://thearguys.com/ar-facts/m4-feed-ramps/
This article suggests that a change in ammo/bullet tip necessitated the feed ramp redesign.
Why would you even be considering a gun like this? It won't be the most accurate gun in the world, like all your others, and you'll just sell it because you're scared of the government.
