VA threading on a B2K?

[scottieb]

I have an early B2K and would like to add a reg of my choosing.

Will a minicocker VA work?

[Myrkul]

No. I'm not sure of the what the actual threads are, but they are specific to ICD bushmasters and Spyder Em-1s, and they are getting very hard to find since both of those needed asa adapters to run aftermarket HPRs.

If you aren't opposed to permanently altering it, there
should be enough meat there to drill it out and tap it for 1/4" NPT and then throw this bad boy on it.

https://palmerspursuit.com/products/1-4-male-825x14-female-asa

[Brokeass_baller]

If they didn't change them in later models, I have a B2K4 I can check for ya.

[Myrkul]

They are the same across all years of bushmaster.

[Brokeass_baller]

The VA screw thread is ⅜-24. There might be enough meat to rethread to ⅛ NPT, but as-is minicocker VA's won't fit.