Gotta love the 5.45x39s! AK or AR you choose!!

[patracy]

Ok So I took one of my other ARs apart and threw the slide fire and 5.45 upper on it. The other lower had a hoop for a sling so it interfierd with the slide fire travel. But I was mainly wanting to see how the FCG group worked with the upper holding it loose. Worked fine. The hammer locked back in every time. I did have one FTFire due to the light hammer spring. Chambered the round again and it lit. I hit the same FTFeed as well, but I attribute that to the lighter stock carbine buffer.

I guess I'm going to go ahead and buy a lower parts kit and replace all of the FCG parts and springs (minus the new spring from the upper). Just not sure about the buffer. I think the buffer plays more with the feeding than the FCG.

 

[Laxguy59]

Ok So I took one of my other ARs apart and threw the slide fire and 5.45 upper on it. The other lower had a hoop for a sling so it interfierd with the slide fire travel. But I was mainly wanting to see how the FCG group worked with the upper holding it loose. Worked fine. The hammer locked back in every time. I did have one FTFire due to the light hammer spring. Chambered the round again and it lit. I hit the same FTFeed as well, but I attribute that to the lighter stock carbine buffer.

I guess I'm going to go ahead and buy a lower parts kit and replace all of the FCG parts and springs (minus the new spring from the upper). Just not sure about the buffer. I think the buffer plays more with the feeding than the FCG.

If you get tired of tinkering with.it, I'm selling a spikes lower with Smith and Wesson upper 545 AR....just saying

 

[sovietak474u]

If you get tired of tinkering with.it, I'm selling a spikes lower with Smith and Wesson upper 545 AR....just saying

It's not the upper. It's something with the lower parts kit. Or.... The buffer.

 

[patracy]

If you get tired of tinkering with.it, I'm selling a spikes lower with Smith and Wesson upper 545 AR....just saying

Why would I want another one? And not piston driven?

 

[sovietak474u]

What brand lower parts kit did you use. I only use spikes or rock river.

 

[patracy]

It's not the upper. It's something with the lower parts kit. Or.... The buffer.

Mine weighs exactly 4.0 ounces. Yours is 4.3 ounces per spike. My other lower had a standard 2.9 ounce buffer in it, causing the short cycle.

This lower came with a complete AR I bought for the upper. I didn't build it, but it has a little wear to it. I'm going to just go through it with fresh parts instead of all this back and forth changing/testing.

 

[sovietak474u]

Mine weighs exactly 4.0 ounces. Yours is 4.3 ounces per spike. My other lower had a standard 2.9 ounce buffer in it, causing the short cycle.

This lower came with a complete AR I bought for the upper. I didn't build it, but it has a little wear to it. I'm going to just go through it with fresh parts instead of all this back and forth changing/testing.

Ahh gotcha. Get a rock river parts kit if you can.

 

[patracy]

Any idea of a place that has them in stock? Or am I stuck with ordering online?

 

[sovietak474u]

Any idea of a place that has them in stock? Or am I stuck with ordering online?

I know few places down here. None where you are. You may be stuck there chief. I sure once you get it going you are going to keep that role for life huh?

 

[patracy]

Yeah if I can get it to run in "almost auto" mode, I will certainly be keeping it forever. I've just had a crap day at work and I had my hopes high that the hammer bob would have fixed it.