450bushmaster AR15 port issues. HELP

[gdun67]

Good morning INGO.
I had some help building a AR15 chambered in 450bushmaster. I went with a SilencerCo receiver set. Took her to the range and im sure I have two issues.

#1 and most obvious....is the ejection port is too small. It is not a "XL" upper
Is there anyone local around Indianapolis that could make the port larger, and still keep my upper in good condition?


#2 I may have to adjust the gas pressure, or work on the feed ramp. But I want to start with the port first.

 

[bcannon]

Good morning INGO.
I had some help building a AR15 chambered in 450bushmaster. I went with a SilencerCo receiver set. Took her to the range and im sure I have two issues.

#1 and most obvious....is the ejection port is too small. It is not a "XL" upper
Is there anyone local around Indianapolis that could make the port larger, and still keep my upper in good condition?


#2 I may have to adjust the gas pressure, or work on the feed ramp. But I want to start with the port first.

Answer to #1- AllenM, Zach at ZR tactical.

Answer to #2- would do both.

Observation- it might be the mojo around your avatar. I suggest changing it and going back to the range and try it again..

 

[gdun67]

Answer to #1- AllenM, Zach at ZR tactical.

Answer to #2- would do both.

Observation- it might be the mojo around your avatar. I suggest changing it and going back to the range and try it again..

Lmaoooo I think your avatar has you confused lol!

I will get ahold of AllenM, thank you sir!!

 

[bcannon]

Lmaoooo I think your avatar has you confused lol!

I will get ahold of AllenM, thank you sir!!

Confused? I've been called worse

Allen is my "go to" for any firearm related wants, needs, or issues. Glad to help

 

[BiscuitsandGravy]

Answer to #1- AllenM, Zach at ZR tactical.

Answer to #2- would do both.

Observation- it might be the mojo around your avatar. I suggest changing it and going back to the range and try it again..

I'll second what bcannon said. I've seen a Fo-fiddy around here somewhere and we had the same issue. You could always take the Dremel or a file to that ejection port tho... Just sayin... If you research the port size recommendation it is not very much. YMMV and .