brass contacting slide upon ejection

gameover · 06-20-2009, 08:36 PM

I just recently purchased a kimber UC II. I put the first 100 rounds through it the other day and I noticed when I was done at the range that there were quite a few brass marks on the slide where the brass ejects. Is this normal? I woulden't expect this from a gun that is highly recomended as far as .45's go. Is there anuthing that I can do to solve this problem? Thanks for any help you can give me.

lefty o · 06-21-2009, 12:21 AM

fairly common. is it denting or crushing any of the brass? also does it eject spent casings in pretty much the same area every time?

gameover · 06-21-2009, 08:20 AM

I don't know if it crushes spent casings or not, the range was full of spent casings. What I will do is clean up my area very well, shoot a few rounds and see if they are getting crushed or not and if they are landing in the same general area together. will the brass contacting the slide eventually wear the finish off?

oldjarhead · 06-21-2009, 08:26 AM

You don't say where on the slide the brass color is accumulating. The ejection port can always be opened up to eliminate this problem if it is of deep concern. Personally, I wouldn't worry too much about it unless there is a massive amount of brass build-up at the point(s) of contact...in that case I'd send it back to Kimber and have them do it right.

gameover · 06-21-2009, 08:35 AM

The brass marks on the ejection port range from right at the opening to about 3/4 of the way back. whats the best way to clean the brass off?

oldjarhead · 06-21-2009, 08:47 AM

A good solvent should remove the brass discoloration.
I'm guessing you're talking the left side of the ejection port?
This is pretty common for most 1911's as the brass is ejected in an upward direction to clear the port and will most likely hit that portion of the slide in the process. This action allows the hot cases to be deflected in a right-ward direction. My old Colt 1911 does the same thing in a minute manner.
As mentioned previously, you can have the ejection port opened up but you may also get some of that hot brass down the back of your shirt. That will make you dance...lol
Go to the Kimber threads and see what others say about the issue.

gameover · 06-21-2009, 10:00 AM

Thanks for all of the helpful info. i will just clean off the brass marks and continue to enjoy my 1911.

06-20-2009, 08:36 PM	#1
gameover Registered User Join Date: Jun 2009 Posts: 4	brass contacting slide upon ejection I just recently purchased a kimber UC II. I put the first 100 rounds through it the other day and I noticed when I was done at the range that there were quite a few brass marks on the slide where the brass ejects. Is this normal? I woulden't expect this from a gun that is highly recomended as far as .45's go. Is there anuthing that I can do to solve this problem? Thanks for any help you can give me.

06-21-2009, 08:26 AM	#4
oldjarhead Senior Member Join Date: Oct 2007 Location: MO Posts: 1,911	You don't say where on the slide the brass color is accumulating. The ejection port can always be opened up to eliminate this problem if it is of deep concern. Personally, I wouldn't worry too much about it unless there is a massive amount of brass build-up at the point(s) of contact...in that case I'd send it back to Kimber and have them do it right. __________________ No war has ever been won by a politician!

06-21-2009, 08:47 AM	#6
oldjarhead Senior Member Join Date: Oct 2007 Location: MO Posts: 1,911	A good solvent should remove the brass discoloration. I'm guessing you're talking the left side of the ejection port? This is pretty common for most 1911's as the brass is ejected in an upward direction to clear the port and will most likely hit that portion of the slide in the process. This action allows the hot cases to be deflected in a right-ward direction. My old Colt 1911 does the same thing in a minute manner. As mentioned previously, you can have the ejection port opened up but you may also get some of that hot brass down the back of your shirt. That will make you dance...lol Go to the Kimber threads and see what others say about the issue. __________________ No war has ever been won by a politician!

06-21-2009, 12:21 AM	#2
lefty o Senior Member Join Date: Mar 2002 Location: mn Posts: 6,239	fairly common. is it denting or crushing any of the brass? also does it eject spent casings in pretty much the same area every time?

06-21-2009, 08:20 AM	#3
gameover Registered User Join Date: Jun 2009 Posts: 4	I don't know if it crushes spent casings or not, the range was full of spent casings. What I will do is clean up my area very well, shoot a few rounds and see if they are getting crushed or not and if they are landing in the same general area together. will the brass contacting the slide eventually wear the finish off?

06-21-2009, 08:35 AM	#5
gameover Registered User Join Date: Jun 2009 Posts: 4	The brass marks on the ejection port range from right at the opening to about 3/4 of the way back. whats the best way to clean the brass off?

06-21-2009, 10:00 AM	#7
gameover Registered User Join Date: Jun 2009 Posts: 4	Thanks for all of the helpful info. i will just clean off the brass marks and continue to enjoy my 1911.