Ultralight Ultralight Rifles

[JBradley500]

I had a spare .623" I.D. stainless sleeve so I thermal fit it on this BCA barrel. I didn't put a set screw in the gas port in this barrel like I did in my other ULUL, but I think that's overkill with the sleeve.

This will go on a future spare parts build, which will likely just end up being the same as the first rendition of my other ULUL.

 

[KyleR1985]

I had a spare .623" I.D. stainless sleeve so I thermal fit it on this BCA barrel. I didn't put a set screw in the gas port in this barrel like I did in my other ULUL, but I think that's overkill with the sleeve.

This will go on a future spare parts build, which will likely just end up being the same as the first rendition of my other ULUL.

View attachment 824774

Mins sharing basic process, and where we can find the sleeve?

 

[JBradley500]

Mins sharing basic process, and where we can find the sleeve?

Easier for me than most because my family has a business that has its own machine shop.

Basically if you can find a machinist, order a sleeve that is 0.75" OD x 0.623" ID x 1" long. Mine are made of 304 stainless. Heat it up until it just starts turning red and drop it on ASAP. It'll drop on and let it cool for a couple of minutes. It's basically a tight press fit once it's cools and contracts.

Tip - if you do this, order a few because you'll probably pay a lot more for setup time than you will for the material and run time.

 

[Luke S]

Will that kind of heat warp the barrel at all?

 

[Trackselk]

Will that kind of heat warp the barrel at all?

I seriously doubt it, large volume of barrel steel and even all the way around. But, I'm about to JB weld in a set screw in mine.

Threading the port is not something the inexperienced would want to try though, it was a very delicate operation. Or in other words, I wouldn't try this if you have tapped HARD steel before. It's a gritty, crunchy feeling operation, unlike any steel that I've ever tapped before. And, like someone previously said, use cutting oil.

 

[Jimbee]

4.5lbs with a magazine and scythe. I know there are a few places to lose weight, scope caps, dust cover, 1/2 to 5/8 muzzle thread adapter....

 

[Trackselk]

BCA pencil barrel, BCA upper/sidechargebcg, PA 5x micro prism update:


Shot 23.5gr, 24, 24.5 Varget at 2.385” with 77TMK.

Looking good! I'm going to shoot mine soon, and then bed it with the loctite, and see if that tightens up the groups

 

[KyleR1985]

4.5lbs with a magazine and scythe. I know there are a few places to lose weight, scope caps, dust cover, 1/2 to 5/8 muzzle thread adapter....View attachment 824854View attachment 824855View attachment 824856

Tell us about your stock!

 

[Jimbee]

Tell us about your stock!

Amazon CF tubes. I bought a cheap aluminum barrel nut off ebay and attached the cf tube with 3 screws and a thin layer off Devcon. The buttstock is a cf tube attached with 6 rivets to a cut off pistol buffer tube. I bought a small piece of cf plate, cut and super glued it on the end of the tube. I'm not sure if it will hold up or not. Time will tell.

 

[JBradley500]

Will that kind of heat warp the barrel at all?

Anything is possible but my Faxon pencil barrel I did it with hammers tiny groups.

 

[HighUintas]

Amazon CF tubes. I bought a cheap aluminum barrel nut off ebay and attached the cf tube with 3 screws and a thin layer off Devcon. The buttstock is a cf tube attached with 6 rivets to a cut off pistol buffer tube. I bought a small piece of cf plate, cut and super glued it on the end of the tube. I'm not sure if it will hold up or not. Time will tell.

Looks good. What's the weight of the stock?
The "pad" is kind of comical looking. Does it actually provide any recoil reduction?

I would bet that if the super glue doesn't hold, using some epoxy with a slight filet built up on each side would be super solid