USFT in da house!!!

[YEMX]

I never thought this day would come!  After lusting after a USFT for over 20 years, I FINALLY have one!!!  I'm going to leave her alone for a while.  My ONLY plans are to replace the original reg and bottle with a Ninja Flex reg with a 13 cu in bottle from Hajimoto (only to make tuning that much easier), and do up a .20 barrel for it.  It came with a .177 installed, and I also have a .25 barrel.  It'll be interesting to see how that .25 barrel and tune goes! I'm scouring the internet for everything and anything I can find on the USFT.  If anyone has any input on tuning, I'm all ears.  I'll upload more pictures later!!  Here's two to wet your whistle:

[Duckfish]

Looks great.
If it was me I wouldn’t change a thing.  Just shoot it till your arm falls off.

[Motorhead]

I'm here huckleberry. 

Looks like a NEW or more recent version ... likely it will be just fine as is.
.25 cal tho not so sure, as the small valve area and lightish hammer used may not make the dwell required for power required.

[ranchibi]

Congratulations! Was that cavedwellers USFT!? Very cool either way! I think that will be spectacular in .20!!! I hope you update us if you get a .20 barrel mounted!

[YEMX]

Looks great.
If it was me I wouldn’t change a thing.  Just shoot it till your arm falls off.

That's exactly the plan for now!! 

[YEMX]

I'm here huckleberry. 

Looks like a NEW or more recent version ... likely it will be just fine as is.
.25 cal tho not so sure, as the small valve area and lightish hammer used may not make the dwell required for power required.

I was thinking that too- I've read the .25 and .30 required a lot of work to set up, and I believe there was only one .30 made?  I'm probably wrong.  Really, I just want to either keep it in .177 or turn it into a .20.  No MAJOR changes. 

[YEMX]

Congratulations! Was that cavedwellers USFT!? Very cool either way! I think that will be spectacular in .20!!! I hope you update us if you get a .20 barrel mounted!

Thank you, thank you!!  Indeed it was!  I'm so glad to have been lucky enough to pick it up!  I most certainly will update this thread!

[ranchibi]

Congratulations! Was that cavedwellers USFT!? Very cool either way! I think that will be spectacular in .20!!! I hope you update us if you get a .20 barrel mounted!

Thank you, thank you!!  Indeed it was!  I'm so glad to have been lucky enough to pick it up!  I most certainly will update this thread!

Haha! That's SO COOL that you got it from him! Thank you in advance for an update on the .20!

[YEMX]

So I checked the AF .20 barrel I have here, and the O.D. is 15.88mm.  That's just with a dial caliper, I'll hit it with a mic tomorrow.  The barrel that's currently installed is 16mm almost exactly.  Question:  Does the breech have enough lee-way to be able to clamp down on a 15.88mm O.D. barrel?  I was hoping to use the barrel I already have (modified of course), but I will buy a new blank from Lothar Walther if I need to.

Also, from y'all's experience, polygonal or standard rifling?  Choked or not?  I'm doing a bunch of research on my end too, I just wanted to get y'all's opinions.  Thanks again!

[Motorhead]

So I checked the AF .20 barrel I have here, and the O.D. is 15.88mm.  That's just with a dial caliper, I'll hit it with a mic tomorrow.  The barrel that's currently installed is 16mm almost exactly.  Question:  Does the breech have enough lee-way to be able to clamp down on a 15.88mm O.D. barrel?  I was hoping to use the barrel I already have (modified of course), but I will buy a new blank from Lothar Walther if I need to.

Also, from y'all's experience, polygonal or standard rifling?  Choked or not?  I'm doing a bunch of research on my end too, I just wanted to get y'all's opinions.  Thanks again!

a single non overlaying wrap of Mylar tape is about right.

[YEMX]

So I checked the AF .20 barrel I have here, and the O.D. is 15.88mm.  That's just with a dial caliper, I'll hit it with a mic tomorrow.  The barrel that's currently installed is 16mm almost exactly.  Question:  Does the breech have enough lee-way to be able to clamp down on a 15.88mm O.D. barrel?  I was hoping to use the barrel I already have (modified of course), but I will buy a new blank from Lothar Walther if I need to.

Also, from y'all's experience, polygonal or standard rifling?  Choked or not?  I'm doing a bunch of research on my end too, I just wanted to get y'all's opinions.  Thanks again!

a single non overlaying wrap of Mylar tape is about right.

Oooh!  GREAT idea!!  Thank you!

[YEMX]

Question about the factory thumb rest.  My rifle didn't come with one, and I'd like to make/install one.  Looking a pictures, it looks like the thumb rest simply uses the rear side screw on the trigger frame to secure it (albeit a longer one).  Is this correct?  Picture for reference:



Can I just remove that rear screw?  I'm worried it may secure something on the inside of the trigger frame, and I do NOT want to mess anything up.  If I can remove that rear screw and use a longer one, I'll make a thumb rest this weekend...

[Duckfish]

No owner’s manual?  Lol

Anxious to find out how it shoots, can you post about that?

[YEMX]

No owner’s manual?  Lol

Anxious to find out how it shoots, can you post about that?

I'm not sure they ever came with an owners manual...  LOL

I've just mounted the scope, and I'm hoping to get shooting very soon!  I've also got a few LDC's I want to test as well.

[YEMX]

a single non overlaying wrap of Mylar tape is about right.

Also- just to clarify, what do YOU mean by "mylar tape"?  To me, it's metal tape, like what you would use to seal duct work.  I just want to be sure...

[Motorhead]

a single non overlaying wrap of Mylar tape is about right.

Also- just to clarify, what do YOU mean by "mylar tape"?  To me, it's metal tape, like what you would use to seal duct work.  I just want to be sure...

No, HVAC aluminum tape likely too thick & it easily tears.

In the realm or "Scotch Tape" types you will find some ( Or even some HD packing tape ) that is a semi tear resistant film material.  get the required thickness with a butt to butt wrap it can make up .005" or so +/- with great success.

[Duckfish]

Purpose built custom gun.  I would seriously doubt if you can modify anything to appreciably improve its performance, or durability.  I would also think any modifications would affect its value.  Others may disagree.
 

[YEMX]

Purpose built custom gun.  I would seriously doubt if you can modify anything to appreciably improve its performance, or durability.  I would also think any modifications would affect its value.  Others may disagree.

Since this is a regulated version using a Ninja regulator, I can simply upgrade the regulator to a Ninja Flex regulator and have the ease of being able to externally adjust the reg without having to disassemble and degas every time I need/want to make pressure changes.  That's about the only thing I could, or even want to do.

Also, not sure what you're really referring to.

If you're talking about the thumb rest, that was a "factory" option that my rifle simply didn't come with.  So it's not a "modification" per se.

[YEMX]

a single non overlaying wrap of Mylar tape is about right.

Also- just to clarify, what do YOU mean by "mylar tape"?  To me, it's metal tape, like what you would use to seal duct work.  I just want to be sure...

No, HVAC aluminum tape likely too thick & it easily tears.

In the realm or "Scotch Tape" types you will find some ( Or even some HD packing tape ) that is a semi tear resistant film material.  get the required thickness with a butt to butt wrap it can make up .005" or so +/- with great success.

Yep- you are 100% correct about the HVAC aluminum tape.  It brought up the O.D. to 16.08mm or 16.09mm

[WildCJ5]

Question about the factory thumb rest.  My rifle didn't come with one, and I'd like to make/install one.  Looking a pictures, it looks like the thumb rest simply uses the rear side screw on the trigger frame to secure it (albeit a longer one).  Is this correct?  Picture for reference:



Can I just remove that rear screw?  I'm worried it may secure something on the inside of the trigger frame, and I do NOT want to mess anything up.  If I can remove that rear screw and use a longer one, I'll make a thumb rest this weekend...

I tore my parts drawer up looking for my thumb rest but couldn’t find it. I swapped grips to a target style 911 grip and the rest wouldn’t fit anymore.

And for the life of me I can’t remember when I removed it if it was just a bolt holding it on or if it did something else with the trigger.

Congratulations on it. I love mine. I like to put just a touch of silicone lube on the breech oring when ii shoot mine. I also keep it swung open when stored.