Quote History Quoted:
Does the carrier move freely within the upper without a mag inserted while cycling with the charging handle? Is the gas tube aligned properly and not contacting the gas key? Are you positive you have the right action/buffer spring installed? Rifle or M4 feed ramps? Have you tried any other magazines?
What happens when you lock the bolt back, insert a loaded mag, then drop the bolt using the bolt release? Does it chamber a round or does it act the same way it does when firing? Does this failure to feed happen every time, or is in intermittent? Also, if you load one round in the mag and fire, does the bolt lock back?
View Quote
The carrier moves freely without a mag
The carrier moves freely with an empty mag
The bolt will lock up with an inserted cartridge in the chamber as long as the mag is empty or not in the gun
The bolt goes into battery even when a cartridge is chambered, so I think the gas tube is is aligned
I don't know how to verify the spring is for an AR10. It came with a kit for AR10 buffer and build kit
M4 feed ramps. But the bolt carrier seems to slow down before the bullet even contracts the feed ramps
The same ftfeed occurs whether I manually run the bolt or use the bolt release
It acts the same whether feeding from scratch or firing
The ftf is every time, not intermittent
The bolt does lock back on an empty mag
The gun functions properly as long as I load the cartridge into the chamber by hand. The bolt will pick up the new cartridge but it slows way down and does not seem to have enough umph to go all the
way into battery. I considered the spring was wrong or too weak....but again, I don't want to go off buying parts that may or may not solve the problem.