What gunsmithing or repairs have you done today

Nice work.

It take more time to setup than to do the cuts. I made a fixture to level the slide in the vice so setup is a lot quicker. You have done a bunch of work, dot site mount, front site, porting, beside cutting the flats. Old mills in some cases are better than a cheap new one. If you have the DRO setup work goes a lot faster. The DRO was the first thing I added to my lathe and mill when I bought the 6-7 yrs ago, money well spent.
 
So I have had this rotating screw holder jig I patched together with thin zinc plates with hardwood end blocks to mount to the drill press
bed. It has been workable but I have really hated looking at it; looks like a Fred Flintstone fabrication but more importantly it limits awkward access to the underside where the fasteners need modification. I used some steel stock and fabricated a rigid jig that can be mounted off the small fixture plate for a full 360 deg access to the fastener tips. Looking forward to road testing it.

Screenshot 2024-03-18 at 6.17.46 PM.png Screenshot 2024-03-18 at 6.18.00 PM.png IMG_0394Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0373Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0375Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0378Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0384Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0398Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0390Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg IMG_0393Gunsmith Screw Rotating Jig Small Fixture Plate Advanced Innovations Fabrication MJD 0...jpg
 
Replaced the sear spring on my buddies Hi-Power. Recommend using HD zip-ties to hold the hammer back if you don't have 3 hands......
I bet that works well!

I made the tool described in the hi-power field manual out of a 16p nail. Slipped some shrink tube on it after a few wraps with electrical tape. Now I have a solid hi-power disassembly tool that won’t scratch the frame or the hammer. Slips on & off easily.
 
Replaced the sear spring on my buddies Hi-Power. Recommend using HD zip-ties to hold the hammer back if you don't have 3 hands......
Many years ago now, I originally used the fabricated hammer retention pin "Special Factory tool" suggested in the High-Power Field Service Manual. It seemed clumsy and risked marring the finish of the hammer and the underside of the beaver tail.
My alternative procedure to liberate the sear spring was to decompress the sear with a soft compression tool i.e. modified version of Irwin small clamps. I have quite of few variations of the clamps for various spring control related assemblies.

First up, the Factory procedure. Then alternative manner to de-power the sear spring. Finally, examples of some of the clamps in use.

The spring compression tool was fabricated from a free paint can top removal tool from Home Depot, it just seemed perfect for the task.
Also use for ejector springs on O/U shotguns etc.

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Road testing the small fixture plate with fabricated V-block for small parts tinkering.
A Brownells #4 blank screw cross-drilled with short machine screw length #55 bit (0.052" dia). The v-block atop the fixture plate is really rigid and allows nice access to get at the small parts with gunsmith sized drills / mill bits.


IMG_0427Gunsmith Advanced Innovation Plate V-block Cross Drilling Screw MJD 03.22.24.jpg IMG_0431Gunsmith Advanced Innovation Plate V-block Cross Drilling Screw MJD 03.22.24.jpg IMG_0438Gunsmith Advanced Innovation Plate V-block Cross Drilling Screw MJD 03.22.24.jpg IMG_0442Gunsmith Advanced Innovation Plate V-block Cross Drilling Screw MJD 03.22.24.jpg IMG_0443Gunsmith Advanced Innovation Plate V-block Cross Drilling Screw MJD 03.22.24.jpg IMG_0444Gunsmith Advanced Innovation Plate V-block Cross Drilling Screw MJD 03.22.24.jpg
 
Yesterday compared and contrasted gunsmith size screw head slotting, hand (Swiss files) v. milling machine (first timer) and turning down screw head diameters on the lathe. Using Brownells blank screws. Any tips would be appreciated.

The mill seemed plenty accurate and quicker, the sq. end mill making a nice slot profile for hollow ground bits.

IMG_0410Gunsmith Screw Blank Slotting Head Mill MJD 03.22.24 copy.jpg IMG_0416Gunsmith Screw Blank Slotting Head Mill MJD 03.22.24 copy.jpg IMG_0418Gunsmith Screw Blank Slotting Head Mill MJD 03.22.24 copy.jpg IMG_0421Gunsmith Screw Blank Slotting Head Mill MJD 03.22.24 copy.jpg IMG_0643 copy.jpg IMG_0645 copy.jpg IMG_8211 copy.JPG IMG_8212 copy.JPG IMG_8213 copy.JPG IMG_8221 copy.JPG
 
Installed a Law Tactical Gen3 folding stock adapter on 16" LaRue OBR 7.6 ( the platform that won the 2010 International Sniper Competition with U.S. Army Service Members Gianelli & Homeyer (spotter using the 16" with a NightForce H58 reticle, consistent hits on 12" plates @ 800 meters). Their efforts and results inspired me to do the same.

Also installed the JP Enterprises Silent Captured Spring System.

The TechCo jig designed to maintain receiver-receiver extension alignment while torquing the castle nut (which I previously modified the jig to accept a wider receiver tang) was also too short for installing a adapter hinge on this 7.62. I fabricated an extended tang alignment from 6061 T6.


IMG_0455Gunsmith Law Tactical Folding Adapter & JP SCSC LaRue OBR 03.254.24.jpg IMG_0464Gunsmith Law Tactical Folding Adapter & JP SCSC LaRue OBR 03.254.24.jpg IMG_0466Gunsmith Law Tactical Folding Adapter & JP SCSC LaRue OBR 03.254.24.jpg IMG_0483Gunsmith TechCo Receiver Extension Block Lengthen Modification 03.24.24.jpg IMG_0489Gunsmith TechCo Receiver Extension Block Lengthen Modification 03.24.24.jpg
 
The long-winded back story on the LaRue OBR 7.62.
I have been told that on occasion the gunsmith needs to quit turning wrenches and get out on the range.

SFC Edward Homeyer’s Personal Account Using Horus

November 29, 2010
A personal account of the 2010 International Sniper Competition from SFC Edward Homeyer, winner of the Service Class, along with his partner Chance Gianelli.
Originally I was going to spot for Chance, but earlier in July while training at Accuracy 1st, we discovered that we work a little better with Chance calling winds and me shooting.
Around mid September Chance got a hold of our committees 16″ Larue Tactical OBR with a 5-25×50 Horus Falcon with a H37 reticle. He zeroed it, trued using the ATrag software and immediately started getting hits on 12″ plates out beyond 850 meters. I was going to originally shoot my M24 with my Falcon. But four days before the comp I got my hands on a 20″ Larue Tactical OBR.

Two days before the comp I received my scope. It was a Nightforce first focal plane 3.5-15×50 with a Horus Vision H58 reticle in it. I put it on my gun and went to zero. After my initial group I went to make my adjustment. That’s when I realized that one of the zero stop screws had broken off in the scope. With the elevation cap off I used a screwdriver and some elbow grease to turn the knob and zero my crosshairs at 100 meters. It was almost dark when I finished that.

The next day Chance and I went out and trued at 900 meters in a 12″ plate. I shot a few intermediate range targets to ensure the data matched. That night I got my zero shift with my PVS 26 at 100, 200 and 400 meters. My night vision zero shift was Left .2 mils. That was what I fired less than 35 rounds through a gun I never touched before and we used it to win overall at the International Sniper Comp. It is a testament to Horus Vision, the ATrag, and the Horus reticle.


Giannelli Homeyer 2010 International Sniper Competition Winners LaRue OBR copy.jpg IMG_5178 copy 2.jpg IMG_5177 copy.jpg IMG_3698REALLY RIGHT STUFF CT-34 WITH ANVIL 30 POOLSIDE RIFLES 07.17.22LARUE OBR copy.jpg DSCN2736 copy 3.JPG DSCN2811 copy.JPG Screenshot 2024-03-24 at 6.18.06 PM.png Joe D. shooting eamail 2 copy 2.jpg Grab a cup of coffee. Screenshot 2024-03-24 at 6.59.29 PM.png Screenshot 2024-03-24 at 7.02.21 PM.png
 
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On Monday I chipped the extractor shooting my Helwan 9mm (Egyptian-made Beretta 1951). A quick visit to Jack First gun parts to order a $28.00 replacement, it was here by Wednesday.

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It took a bit of filing and finishing with 1000 grit wet-dry to get the new part to fit in the extractor groove in my slide.

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Once fitted, it fed-extracted my dummy rounds just fine. Hopefully I will escape to the range tomorrow to see how it functions with live ammo. 🙏

Stay safe.
 
Finished tweaking my BHP today. It dropped to half cock a couple of times last range trip. I consulted the Browning field manual and found the problem addressed there. Simple fix to stone a certain sear contact point where it was a bit high and contacting the slide. Easy fix that makes the slide feel so smooth in operation now. Sure have learned a lot about fitting a new sear!

Range time tomorrow, I hope. Just need to verify.

I’d really like new sights on this BHP, but I’m not really interested in sending it away for the work… would require cutting dovetails for the front sight (currently a staked on blade) and the rear (tiny factory notch).

Novak does this routinely… and a few other smiths.

Hmmmm….
 
Got that leupold vx-3hd 3.5-10x40 firedot mounted with the new talley lightweight medium rings, I could maybe went with lows but it would have maybe touched the eye piece and if not it would not be much room and have my thumb get in the way if using a pinch grip. Camo the stock is next, I should probably take pictures before that tho.
 
Finished tweaking my BHP today. It dropped to half cock a couple of times last range trip. I consulted the Browning field manual and found the problem addressed there. Simple fix to stone a certain sear contact point where it was a bit high and contacting the slide. Easy fix that makes the slide feel so smooth in operation now. Sure have learned a lot about fitting a new sear!

Range time tomorrow, I hope. Just need to verify.

I’d really like new sights on this BHP, but I’m not really interested in sending it away for the work… would require cutting dovetails for the front sight (currently a staked on blade) and the rear (tiny factory notch).

Novak does this routinely… and a few other smiths.

Hmmmm….
Big fan of Novak sights , really Novak anything. IMG_0929.jpeg
 
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Today I installed a Jard Trigger to my CZ 457 Varmint Rifle. I'm use to light triggers and no matter what I did with the fully adjustable trigger on this rifle the best I could do was 2 1/4 pounds. My 10/22s have better triggers so I did some research and found 4 options.

First was DIY and polish all the internals which should get me down to about a pound and a half.

Next was a YoDave spring kit that will reduce your trigger pull by 50%.

Timney Trigger boasts 1 1/2 pound but some people have gotten them down to 9 ounces.

Jard Trigger: 3 options - 3 to 6 ounces, 7 to 10 or 10 to 14. I chose the 3 - 6 ounce trigger.

I can no longer see small parts and I shake too much to be playing around with replacing springs, thus the Jard looks to be the best option. Adjustable for weight, pre-travel and back travel I played with it for a while and could get it to 7 ounces.

Since I bought the 3 - 6 I called Jard. Steve answered the phone, reiterated the instructions and had me up and going with 3 ounces. Wow what a difference.
Customer service is outstanding, from their easy web sight, fast shipping and phone support.

Steven
 
Nothing firearm was broken or in disrepair so tinkered with bringing a LaRue OBR 7.62 receiver extension into the 21st century. What ? Virtually every AR extension has a single drainage hole in the rearward face of the buffer tube to drain fluids if the rifle is submerged. Only one? really? It's less than an 1/8" diameter so no rapid drainage expected from the user. Geissele Automatics, which just received a large military contract for M4's has a 4-hole addition to the rear drainage port. Just for fun, subjected the OBR tube to the ravages of a #35 drill bit (pin gauged off the Geissele) and centered on the LaRue tube with a 0.315" precision gage pin, the holes being 0.650" in between. Seems like an odd distance. Why only 4 in the Geissele in their 6-position tube ? Why not all 6 ?

IMG_0543Gunsmith Receiver Extension Buffer Tube 4 Holes Plus Geissele Style MJD 03.29.24.jpg IMG_0544Gunsmith Receiver Extension Buffer Tube 4 Holes Plus Geissele Style MJD 03.29.24 2.jpg IMG_0523Gunsmith Receiver Extension Buffer Tube 4 Holes Plus Geissele Style MJD 03.29.24.jpg IMG_0527Gunsmith Receiver Extension Buffer Tube 4 Holes Plus Geissele Style MJD 03.29.24.jpg
 
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