texaz, there is nothing wrong with your carrier/bolt group. This is a feeding problem betwen the magazine and feed ramps.Lead tipped bullets will drag alot on the feed ramps. Polish your feed ramps smooth.Next check where the steel ramps meet the aluminum receiver. The aluminum ramp (if it has the ...

I'm thinking that the cutout in the bolt carrier is too short....look at the dings on the shoulders of these two cartridges. These were the top rounds in the mags when the carrier tried to pick them off of the magazine. I'm trying to get this on to AR15.com, but they haven't allowed me in yet....mus...

bow shot wrote:
Don't forget to try ar15.com! Great resource right there!

Good point, I didn't even know it existed until now. Thanks!

The 204 Carrier on the left is the same kind I use in all my AR15's. It's an M16/AR15 legal to use carrier. That is not the problem. Was this a custom build or factory upper? Is it new or used? A 204 Ruger chamber has a vey long throat. Loading to 2.260" is OK. What is the exact problem you ar...

Wow! Looks like some body didn't enter the correct dimensions on the cnc machine? I looked at my bcg and it appears to be very close to your .223 rra bcg. Can you interchange and try them? Or would that be a no no? The dimensions on the head are the same I think is the problem that it won't run ano...

I received a complete upper in .204 for Christmas with the intention of just swapping out uppers on my RRA AR15. All went well until I took it to the range and I couldn't get it to cycle. I changed out the buffer spring and that didn't help. Let me just say that I've only fired Hornady factory 45-gr...

Hello: My name is Texaz and I live in the Texas Hill Country. I am an avid shooter, have been all my life, but I'm new to the .204 Ruger. As a matter of fact, I just got a new AR15 upper assembly in .204 for Christmas. I'm thinking it will be my ultimate pdog/coyote rifle as soon as I get it functio...