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Old 09-05-2019, 05:22 PM   #1
Masada   Masada is offline
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VSR Ultimate by Masada

To start, this is a project that I have been wanting to do for a while now and Iíve finally gotten motivated to do it. In short, I wanted to make the best VSR platform that I could.


With that said, this is a one-piece VSR receiver and outer barrel that is fully CNC machined out of 7075-T6 aluminum then hard coat anodized dark grey. Inside are two CNC machined PTFE (Teflon) sleeves to guide the cylinder assembly. With PTFE being a natural lubricant the bolt pull is extremely smooth and requires no other oil or grease to keep it feeling nice.

The ID of the outer barrel is a little tighter than the normal VSRís out there. This was done to hold the hop up chamber closer to the center axis of the outer barrel for better air seal and consistency. I designed it specifically for use with the Action Army hop up chamber, and itís a nice fit in there.

I decided on a 16Ē outer barrel for this one (measured from the chamfer at the front of the receiver section), but obviously any length is possible. 16" gets you to about a 350mm inner barrel. There is a threaded front end for use with muzzle devices as well. M28x1mm.

All major dimensions I took directly from a Marui G-Spec. The pictures that you see below are with Marui and Action Army parts installed.

Thereís only one thing I need to fix for any future production of this: I need to adjust the angled section at the rear of the receiver so that it sits flush on regular stocks.

In addition to the one-piece receiver, I have some parts that I designed to make use of a true LRB system in this platform. I honestly donít know if the entire system will work, but at the very least the adjustable barrel end cap will allow for bending of the inner barrel like all the other LRB mods do. The pieces that I am unsure of are designed to implement an LRB like what was in airsoft guns of the 80ís and 90ís. These LRB components are not done yet though, but I will update when they are.


If there is enough interest I am willing to have a batch of these made for the people that want them.



















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Old 09-20-2019, 11:06 PM   #2
Srosh   Srosh is offline
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Will you offer the sleeves separate?
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Old 09-21-2019, 02:16 AM   #3
Masada   Masada is offline
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Quote:
Originally Posted by Srosh View Post
Will you offer the sleeves separate?
I don't see why I couldn't, though I don't know if they will drop into a standard VSR receiver. Also, with them being PTFE, they aren't cheap in low volumes.

I'll probably set up a group buy or something when I get everything ironed out. The set of hopup/barrel will be done next week, plus an updated receiver a little later.

Surprisingly the receiver and sleeve set is not unreasonable cost wise as long as more than one is made at a time.
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Old 09-21-2019, 07:54 AM   #4
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That's a sick looking VSR... 👍
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Old 09-22-2019, 08:48 AM   #5
Pasty   Pasty is offline
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I’d be interested in one of these (price pendant), if you ever make them in batches.
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Old 09-23-2019, 02:44 PM   #6
Masada   Masada is offline
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Got these parts in today. Basically some new chamber ideas I'm trying out, plus an adjustable end cap and rigid barrel spacer that allows for bending of the inner barrel.

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Old 09-23-2019, 05:15 PM   #7
Srosh   Srosh is offline
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Well I'd definitely be interested if the price isnt crazy high
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Old 09-23-2019, 09:07 PM   #8
Masada   Masada is offline
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So just to be upfront for the people that are interested, ballpark price for the receiver and sleeve set is looking like $300-$400; obviously very dependant on volume. Could probably cut some cost out if I did Delrin sleeves instead of PTFE, though I haven't looked into the difference and I prefer the PTFE anyway.

Also, any opinions on barrel length?
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Old 09-24-2019, 01:02 AM   #9
Srosh   Srosh is offline
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Oof yeah I'm out at that price no offence but at that price I'd rather just get a vsr R it's cool to see awesome new vsr products coming to the market and trust me I totally relies its definitely not cheap and definitely costs a lot of money to do these things I honestly wish I was loaded to buy all of them because the creativity is just amazing and would love to support all of it

Last edited by Srosh; 09-24-2019 at 01:05 AM.
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Old 09-28-2019, 10:50 AM   #10
Masada   Masada is offline
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More stuff to try out...

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Old 09-30-2019, 03:32 PM   #11
Masada   Masada is offline
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Let's talk LRB's...

After doing some testing this weekend I can confidently say that traditional LRB's don't work the way everyone seems to think they do. This whole concept of running a bb down the top of the barrel to generate backspin is completely false and does not work. No amount of barrel bending is going to generate enough backspin for even lightweight bbs.

Having said that, I think the idea of a light downward bend in the barrel does help with stabilizing the bb in the barrel to improve consistency. So in that sense, bending of the inner barrel seems viable, though I don't have any first hand results for this yet. I'd also say that calling this system an "LRB mod" is incorrect, but I also don't have a better name for it currently.

The traditional LRB system employs an offset barrel ID compared to the chamber. The chamber contains two o-rings, one that mates with the face of the inner barrel, and one that interfaces with the nozzle. I believe that the offset ID on a traditional LRB is essentially forcing the bb to climb through a section of that front o-ring thus acting as a sort of "fixed hop up rubber". I'm almost positive that any notion of an angled or bent barrel applying hop up is false, but if someone has some evidence otherwise I'd love to see it. I wanted this LRB system that I designed to work, but alas, it doesn't.
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Old 09-30-2019, 03:44 PM   #12
Masada   Masada is offline
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To elaborate how I tested the LRB concepts, I made these two pieces (shown below). These are designed to fit inside an Action Army hop up chamber. A regular inner barrel fits in from the right side, and two orings are fitted in the grooves on the left. The o-rings used are the exact same size as what is used in all classic airsoft gun chamber systems (in fact these are just leftovers from my old Asahi's). The leftmost seals with the nozzle, and the right holds the bb until enough pressure has build up to push it through.

One design holds the inner barrel even with the chamber, the other offsets it slightly upward. These chamber sleeves interface with the standard threaded holes on the action army chamber to hold them and the inner barrel in the correct place.



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Old 10-02-2019, 06:55 PM   #13
Masada   Masada is offline
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For whatever reason, out of everything I've made so far, the custom rail for the receiver has been the most satisfying. For a while I tossed around the idea of making the rail as part of the one-piece receiver, but obviously that's just way too difficult to be worthwhile. The contour on the underside of my custom rail is exactly the same as the OD of the receiver, so I guess that's a good backup option haha. It fits really nicely.



Also added chamfers around the hop-up cutout on the second piece. Easier to machine, plus adds strength compared to the squared edges of the original and normal VSRs.

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Old 10-02-2019, 09:45 PM   #14
Sodium   Sodium is offline
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Super exciting! I would certainly order one, if the price was around the $300 mark. What excites me is the Teflon sleeve. I imagine that makes for a really nice bolt pull.

Any idea how the price would go down depending on the bulk of the order. Regarding Barrel length, how customisable is that? Would you be able to get them made and cut them down after?

Last edited by Sodium; 10-02-2019 at 09:48 PM.
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Old 10-02-2019, 10:17 PM   #15
Masada   Masada is offline
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Quote:
Originally Posted by Sodium View Post
Super exciting! I would certainly order one, if the price was around the $300 mark. What excites me is the Teflon sleeve. I imagine that makes for a really nice bolt pull.

Any idea how the price would go down depending on the bulk of the order. Regarding Barrel length, how customisable is that? Would you be able to get them made and cut them down after?
I haven't checked on prices in a while, but they come down pretty fast after the first piece. I think with just 3 receivers and sleeves it's doable around $350 each. Not that I'm even limiting this thing to a group buy. If someone wants just one I'm fine with having one made at a time, it just gets pricey.

I wouldn't cut the barrels down after they are made. You'd lose the threaded end and end up with an un-anodized section. It might be possible to get different lengths made in the same batch, but I haven't checked. Obviously if it's just one at a time you could specify whatever you want. Same with anodizing color.

Bolt pull is very smooth with the PTFE sleeve, but it also depends on your cylinders finish. If you have one of the chrome stock ones its ultra smooth. The PDI and Action Army ones with that sort of rough grey finish have a bit more resistance, but are still smooth.
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