New Huma upgrade for the pre M3 impacts!

Well, not new, but a revised version.
The Huma first stage reg for the pre M3 Impacts.
I just got this installed a week or so ago and I’m still undergoing tests, but judging from how the gun shot before this mod, here is what ive noticed-
1. Quieter for sure
2. The “sweet spot” of 230 bar down to around 180 bar is gone. From 250 bar full fill all the way down to 180 bar the gun shoots and performs the same.

My factory Mk2 reg is currently set at 130 bar. Even at that setting, in the past I always noticed the gun didn’t get “in the rhythm” till around 230 bar and somewhere below 180 bar it lost its snap. Hard to describe, as the tuned velocity was still good till 130 bar, but it just felt different. From the rapport, to the slight kick, all that changed as the air pressure went down or if it was at a full full.

With this first stage reg taking the bulk of the load(as all M3 owners benefit from), my impact handles like a dream. I also noticed although my shot strings vary in the spreads from tin to tin, I don’t get the 940, 935, 912, 945, 928, 960, etc(like where did that 912 and 960 come from?!)

Best things I like about this upgrade on top of better consistency is the new fill location along with the quietness that came with it. I use a huggett snipe and it works well, but that snap shot noise seems to have tamed a bit, which is always a plus.

So, let’s talk about why I say this is the revised version.
Huma came out with a first stage reg a couple of years ago. In my research what I learned that did not appeal to me was the fact that the entire bottle had to be drained of air if you needed to pull the bottle off to adjust the first reg which was within the bottles adapter mounted on the trigger block(same as an M3. Plus, at what seemed to be like 3” in length, I didn’t like the look it gave with the bottle moved that far forward.

So here’s version 2-

Total length and the amount it moved my bottle forward was a mere 1 5/16”. The machining work is flawless as most of humas aftermarket parts are, and the fit up is tight, meaning, it looked like it was meant to be there out of the factory.
Tge install procedure was super easy, just take your time and read the instructions well. I’ve noticed over the years Huma has been more detailed in their step by step instructions, with more pics to boot.

Here’s a copy-

I’ll let you all read up on the specs and options that you have in gages and gage location, but I opted to have my gage on the right side next to the factory fill pressure gage, that now becomes the first stage reg pressure. For my 25 cal my first stage is set at just a hair under 200 bar, and on my 22 cal impact it’s at 160 as it came from Huma. Adjusting the first reg is as easy as all Huma regs are to adjust.

So here are a few pics of the Huma Reg installed. The new fill port is now relocated to the left side, and the Huma kit comes with a plug to close off your factory fill port location-(pics at next post)
 
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Here are pics of the parts. You can see how it was well thought out, like with the machined side tabs that anchor onto the sides of the factory trigger block-
348BB47E-E312-4CFF-A016-22C08B85F897.jpeg
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E1EB20E3-F737-439A-9D93-ECC04E1353C3.jpeg

If you look at the install instructions you’ll see the pics I’m putting up and understand how it all goes together.

The tools I needed for just the installation of this upgrade-
Wrenches and socket-
C44308F7-8B72-4FB6-AF1F-AC0844E2F05E.jpeg

That 15/16” socket is to remove your existing bottle adapter. Use something like masking tape to protect the finish of the trigger block. I had a 3D stud(you know who you are) make me up some special washers I drew up for the sole purpose of protecting the finish of the block when putting a wrench against it-

12CD416D-E2DC-4AD3-8D11-91541DE4998A.jpeg

You will also need a 2.5mm allen to remove the bottom half of the trigger guard to help simplify installation.

Here are more install pics I took along the way-
24EB9A23-C595-440B-B49F-8D2083700AA4.jpeg
3D3B9F2E-F286-4D8E-B47E-B3985DCD48FF.jpeg
921CED5B-1D59-4132-BDD5-A00242D3EA9D.jpeg

And now the completed install. Fill pressure and first reg pressure both at the right side, and new fill male QD at left side(you actually reuse your factory QD)
C3E5EEDD-E13E-44AB-978F-59929B86F3B6.jpeg
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I cannot take credit for this find. It was a most respectable member on this forum, VETMX, that told me about this. He knows very well the goals of my impacts and when he said this upgrade is the best thing I could do for a performance upgrade, I had to check it out!
When I contacted Marc from Huma he told me this had just been released for sale like a week before. It hadn’t even made social media yet.

I understand a first stage reg isn’t for everybody, especially folks that run really high second reg pressures. But for me and my goals with my impacts this was heaven sent. I shoot tethered to a regman regulator when I’m setting a tune or target shooting. I used to have to set the Regman to around 220-230 if I wanted decent accuracy. Now I have it set at 250 and it shoots just as good as if I had it at 230. No more concerns about staying within that window of air pressure that leads to the most consistency. Now, it’s 100% consistent, from spreads to plenum refill.

This addition, along with the airmarksman back bone rail, I can honestly say are the two best things I’ve done towards my impact builds.

I’m gonna end this with something very important I almost left out- just like removing the bottle before this mod, I can now just unthread the bottle and save the air within, just like a factory M3. No need to drain the bottle. Adjust the first reg to whatever you need snd reconnect the bottle.

Thank you
 
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Here are pics of the parts. You can see how it was well thought out, like with the machined side tabs that anchor onto the sides of the factory trigger block-
View attachment 334266View attachment 334267View attachment 334268View attachment 334269View attachment 334270
If you look at the install instructions you’ll see the pics I’m putting up and understand how it all goes together.

The tools I needed for just the installation of this upgrade-
Wrenches and socket-
View attachment 334273
That 15/16” socket is to remove your existing bottle adapter. Use something like masking tape to protect the finish of the trigger block. I had a 3D stud(you know who you are) make me up some special washers I drew up for the sole purpose of protecting the finish of the block when putting a wrench against it-

View attachment 334275
You will also need a 2.5mm allen to remove the bottom half of the trigger guard to help simplify installation.

Here are more install pics I took along the way-
View attachment 334277View attachment 334278View attachment 334279
And now the completed install. Fill pressure and first reg pressure both at the right side, and new fill male QD at left side(you actually reuse your factory QD)
View attachment 334280View attachment 334281View attachment 334282
I cannot take credit for this find. It was a most respectable member on this forum, VETMX, that told me about this. He knows very well the goals of my impacts and when he said this upgrade is the best thing I could do for a performance upgrade, I had to check it out!
When I contacted Marc from Huma he told me this had just been released for sale like a week before. It hadn’t even made social media yet.

I understand a first stage reg isn’t for everybody, especially folks that run really high second reg pressures. But for me and my goals with my impacts this was heaven sent. I shoot tethered to a regman regulator when I’m setting a tune or target shooting. I used to have to set the Regman to around 220-230 if I wanted decent accuracy. Now I have it set at 250 and it shoots just as good as if I had it at 230. No more concerns about staying within that window of air pressure that leads to the most consistency. Now, it’s 100% consistent, from spreads to plenum refill.

This addition, along with the airmarksman back bone rail, I can honestly say are the two best things I’ve done towards my impact builds.

I’m gonna end this with something very important I almost left out- just like removing the bottle before this mod, I can now just unthread the bottle and save the air within, just like a factory M3. No need to drain the bottle. Adjust the first reg to whatever you need snd reconnect the bottle.

Thank you
What's your personal opinion on the backbone rail, thinking about getting one I just wish it had a level built in.