pistol vs a1 buffer tubes

[95wrangler]

Anyone know the outer diameter and length difference between a AR pistol buffer tube and an A1 or A2 buffer tube?

How about the inner diameter of a Sig pistol brace?

 

[M67]

The Sig PSB will fit a receiver extension of 1"-1.25" properly. Any fatter than that, I suggest some lube to get it going. There are some extensions where the diamater are so large, that you'll only get a brace on half way, won't go any further, and looks like it's going to pop anyway

I've had pistol tubes range from 1"-1.35" before, depends on the manuf.

That being said, diameter of an A1/A2 extension is 1.112"

 

[95wrangler]

Thanks! how about length? It looks like pistol tubes vary all over the place but no one lists the length of them. How long are the A1/A2 tubes?

 

[M67]

The 1 pistol tube I have left measures 7" long

A1/A2 are 9.5" long

 

[95wrangler]

Thanks!