Project AR180B front load gas system, also Tavor rear sling mount *PICS!*

[Urban_Ops]

Bryce,
I wouldn't steal your design, I have enough things on the table as it is
Besides my floating handguard has a removable top rail for cleaning the piston.

 

[eigenvector]

Pretty much stainless

If by pretty much stainless you mean about 1/10th as stainless as what normal people (read: AISI) call stainless, then yes, you're right.

Out here in the real world, ~1% chromium ain't stainless.

 

[Armedsask]

Bryce,
I wouldn't steal your design, I have enough things on the table as it is
Besides my floating handguard has a removable top rail for cleaning the piston.

Ha, I laugh at your two piece hand guard! Does your removable top rail return to zero?

 

[Grizz Axxemann]

Now the game is on. Loser gives me their AR180B.

 

[OZZ]

You know Bryce, you ain't half bad for a Stubblejumper.

And Ozz, I did read that link. Hence my previous comment.

The rectal speech has been amazing, but it's getting stale.

You sound like a guy into rectal.

Its Timkens blend and marketed as such. It has the corrosion resistance associated with stainless blends.

 

[OZZ]

There is no such thing as STAINLESS 4140. Read the actual Google hit instead of just posting the page thinking that is proof. The data on that page is the properties of AISI 4140 alloy steel. NOT stainless 4140 as you claim.

You got confused, likely between 410 stainless and 4140 steel.

Okay Im confused and stupid, whats your excuse for aluminum gas block?

Genius? Want a marshmellow?

 

[cobra_on_speed]

You sound like a guy into rectal.

Its Timkens blend and marketed as such. It has the corrosion resistance associated with stainless blends.

A mill around here used to make wood composite fiber beams that had the strength properties of a steal beam. Still doesn't make it a steal beam

Anyway, looks like a cool project

 

[Armedsask]

Okay Im confused and stupid, whats your excuse for aluminum gas block?

Genius? Want a marshmellow?

You don't read so good, do you?

You're question has been answered.

 

[mt84]

Could we keep this thread on track.

Armedsask, like what U R making. Keep up the good work.

 

[Armedsask]

I'm glad I made the gas block out of aluminum because I've already changed the design. I made the gas cylinder outer diameter the same size as the minor diameter of the threads. Bit of a brain fart on my part, because the minor diameter of the internal threads of the block is a lot bigger than the gas cylinder, so there is a lot of play. Tightening the cylinder causes it to tweak to one side, pulling it out of alignment with the bore center line and binding the piston.

I'm going to make another one out of 4140 and have a smaller through bore so the cylinder will fit tight with only a .001" clearance. For now, I'll keep the stainless piston and cylinder until I find a reason that it doesn't work.

Other than that, everything fits up perfect. Just some minor changes to the outside profile so I can use a larger cutter for a better surface finish.