Should I be concerned with this?

[m16]

FNG checking in.

I just bought a Lilja-Nordic barrel and I am sticking it in a Vltor MUR.

Here is the result:

Attachment 10763

Notice the left ramp is slightly off, this creates a small, sharp burr on the outer edge that looks MUCH worse when viewed from the tail of the upper - it's hard to get a good pic because of the angle.

Is this a big deal? Please advise.

[Reagans Rascals]

It may cause feeding issues.

I'd run it, and if there are issues I'd return it and ask them to fix the extension, if they won't I'd either replace it myself or in a worst case scenario, attempt to de-burr it with a dremel.

[C4IGrant]

Blend in the ramp to the barrel extension and then polish the barrel extension ramps.



C4

[MarkG]

It will run fine. No grinding or polishing necessary...

[C4IGrant]

It will run fine. No grinding or polishing necessary...

Burrs in the barrel extension feed ramps are pretty common. They can also be so small that the human eye cannot see them. The bullet then drags on them causing a mafunction. This is why it normally a good idea to ALWAYS polish the ramps.




C4

[m16]

Roger that, it will be dealt with.

I was more worried about gouging up the jackets than feeding issues.

I haven't hand-cycled any ammo through it yet, the upper isn't even complete.

Thanks for the input!

[markm]

It will run fine. No grinding or polishing necessary...

Completely agree....

I've had much worse alignment on that, and the gun still ran wonderfully.

Plus.. you don't want to be removing any annodizing on the upper if possible. You risk doing more harm than good by messing with this.

[seb5]

It it were mine and it either was a problem or I couldn't live with it I would pull the barrel and use a small gunsmithing file to take the burr off so as not to hit the aluminum upper, reassemble, and check for fit, then shoot for function.

[BUBBAGUNS]

It it were mine and it either was a problem or I couldn't live with it I would pull the barrel and use a small gunsmithing file to take the burr off so as not to hit the aluminum upper, reassemble, and check for fit, then shoot for function.

I would do this.

[WartHog]

I would polish it and then run it!