I Don't Like Working on CZ-75s

I took my CZ-75B SA apart yesterday afternoon.  Today, I polished the trigger bow and sides of the hammer.  I reduced the hammer hooks some, and changed the sear angle a bit.  Good news is that I got the pull weight down a few ounces.  Bad news is that there's still pretty much the same amount of creep, and the hammer still cams back when I pull the trigger.  I'm going to have to take it apart, cut the hammer some more, and get it all back together again.  I will probably hold off on the sear angle until after I check to see if the hammer/sear engagment is even on both sides.

I'm not looking forward to this.  There are a lot of little parts and springs and pins in these Czech pistols.

I've worked on 10/22s, AR-15s, and AKs.  I even managed to take an M1 Garand apart, and get it back together properly a couple times.  I've done trigger jobs on a good half a dozen Glocks and a couple 1911s, and replaced the leaf hammer springs in Colt and S&W revolvers.  The CZ-75 wins for being the most fiddly and frustrating auto to work on, and my single-action doesn't even have a decocker, which I'm told are even more fiddly and frustrating than the thumb safety pistols.

My Korean Glock Mags Are Going Bad

A couple or few weeks ago, I was at the indoor range, and I noticed as I was loading a couple of my 17-round Korean Glock magazines that something was odd.  The feed lips weren't holding the cases very well at the front.  Wasn't long before a bullet jammed against the barrel hood instead of going into the chamber.  The feed lips had spread out.

I went to the outdoor range after work to do some chronograph testing, and noticed that one of my 15-round KCI Glock magazines was not dropping free.  I don't know when or how it happened, but the top-front of the magazine had peeled away.

I guess I'm not really surprised that the mags failed, just a little disappointed.  My first post about the Korean magazines was back in 2010, so I would bet that each of these magazines has well over a thousand rounds through them.  They have been my primary range mags for years.

Photos of New KKM Precision Barrel

Although KKM doesn't make very extravagant barrels (titanium plating, spiral fluting, etc.), they do a fantastic job of what they do - making some of the best stainless pistol barrels in the world.  The one I just received recently is so beautifully finished that I wanted to take a few photos before I put it into the slide and start putting wear on it.

My Holosun HS507C is Dying/Dead

Okay, I guess I've joined the club.  My Holosun HS507C is failing me.  Yes, I knew going in that this was a possibility, but I didn't really think it would happen so soon.

I bought the Holosun from Aim Surplus on April 14th, with the intention of just trying out the slide-ride red dot concept.  I got about 425 rounds of 9mm fired before it started to shut itself off.  Today I took it out, and fired about three rounds, and then the reticle disappeared.  I can turn it back on, which puts it back into auto-brightness mode, which doesn't work well at all, and then a few rounds later it's turned off again.  It is rather hot today, but I know that hot for July in Pennsylvania only qualifies as "warm" for a place like Louisiana.

I have made no attempt to "torture test" the sight.  Never banged it against anything to rack the slide.  This is just 425 rounds of normal use with standard pressure 9mm.

Although changing settings is somewhat complicated with only two buttons, I like the Eotech-type reticle for this kind of application, and was enjoying using the sight.

I filed a warranty claim with Holosun on July 30th.  I haven't yet received any phone calls or emails yet.
EDIT: Received return label on August 7th
EDIT: Replacement sight shipped August 26th

Open-ended Coupon Codes

I'm going to try to keep a running list of coupon codes that don't expire.  If you want to contribute something, please leave a comment.

1776 United t-shirt store - 1776Mrgunsngear - 10% off
Amend2 Mags - BSGW20 - save 20% on your order

Atibal Optics - FIREARMSINSIDER20 -  20% off
Black Rhino Concealment - WLSMOFO - 10% off
Bowers Group Silencers - WLS - $15 off $50+
Condition1 Cases - Gadgets10 - 10% off
Chase Tactical - AR15NEWS - 10% off
Crossbreed Holsters/Belts - TGC15 - 15% off

Everest - WELIKESHOOTING - $30 off
Faxon Firearms - WLS10 - 10% off, WLSGUN
Freedom Munitions - TLBS - 5% off
Gadsden & Culpepper apparel - DTOMUSA - free shipping
Gallant Bullets - Pewpro10 - 10% off
GlockStore - Humble10 - 10% off
Grizzly Targets - LBS99 - 15% off
Harry's Holsters - TheHumbleMarksman - 10% off
Hobby Metal Kits - tblcn - 10% off steel
Holster Loops - holsterwars - 10% off
Infinity Targets - Tyler15 - 15% off
ITarget Pro - NEWS - 10% off and free shipping
J Dewey Cleaning Rods - JTROD10 - 10% off
Mag Commander - 70415 - $15 off PF940CL 80% frame with lower parts kit
Manticore Arms - WLS10 - 10% off
Neomag - WLS10 - 10% off
Nine Line Apparel - MGNG15 - 15% off?

Olight - Gadget10, JM10, or TLBS - 10% off (same for all)
Opticsplanet - Gadgets5  KB32, or TLBS - 5% off (same for all)
Peak Ammo - 704tactical - 5% off and free shipping option
Polymer80 - WLSISLIFE - 15% off
Premier Body Armor - TLBS - free shipping
QVO Tactical Holsters - talonsentme - 10% off any holster
SB Tactical - TGC15 - 15% OFF
Short Round Supply - THM2019 - 5% off
Swampfox Optics - WLSISLIFE - 25% off
Tactical Pontoon Triggers - BSGW7 - 7% off
Taran Tactical Innovations - JBOSSTTI10 - 10%
Trigger Fanatics cleaning products - GG10 - 10% off
Sportsmans Guide - GUNSNGEAR - $20 off $100 for firearms purchases, or Hegshot87 - $20 off $100, no exclusions, or WARPOET - $20 off $100
Wilder Tactical belts - VSO - ???  Discount not stated.  Try it, see what happens.

Related Links:
We Like Shooting: Sponsor Discounts - Source for some of the WLS codes.  There may be updated codes here.
RetailMeNot - Will sometimes have valid codes for larger websites like Brownells, Midway, Pyramyd Air, etc.

ACME Bullets 5% Off Coupon Code

Coupon code for 5% off all items at ACME Bullets store - "IY6C"
They have lead ingots, if you are a do-it-yourselfer. Prices are pretty low to begin with.

Hat Tip to Isyour6covered®

UPDATE 3/23/23:  Can't find any current coupon codes for ACME