Glock 27 - Brass on ejection port

[bluedog]

Picked up a used 3rd gen G27 from a member last weekend and finally got to shoot it today. After the first few mags I noticed brass on the lip of the ejection port. Is that something I should be concerned with? When I cleaned it I found brass shavings all over the inside of the gun (little flakes). I was shooting WWB ammo, and didn't have any issues except when using one of my G23 mags (3 failures to feed). I used 4 different G27 mags (with and without pinky extensions) and they were fine. I inspected the spent brass and the only signs of wear that I saw were where it had slid along the top of the mag. I'll try to upload some pictures.

Sample of the brass on the ejection port:

Is this what newer gen3 springs look like? Could this be the problem with the failure to feed with the G23 mags?

Edited November 12, 2011 by bluedog

[TNWNGR]

Nope. The brass shavings are normal and as long as the ejection is consistant to the side all's good. The G-23 mag in a G-27 can cause FTF problem's due to finger/hand pressure on it's base while shooting. I make myself relax my little finger when shooting a G-27 with G-22 or 23 mags. Other factor's can be to loose of a grip or a bad mag as you know but first try to put less pressure on the mag base.