Can a an AR-15 trigger be used in a Sig Spear LT?

[david walter]

Drop in?

How about an FRT like a WOT? Or a three position FRT?

I can get the triggers in MS (where I live) but wanted to ask before dropping a lot of coin for a FRT.

Since ATFE decided they’re legal, again.

 

[kl3309]

FRT Triggers 3 Position FRT Trigger with Ambi Safety Selector

www.deltateamtactical.com

 

[david walter]

Not a drop in?

 

[kl3309]

OK, guess you're not going to able to FRT without a full-auto trip on your bolt. There's this: https://www.parkermountainmachine.com/product/sig-sauer-rattlervirtusmpx-full-auto-kit/ but thinking it's for 07s.
Seeing where Geissele SSA-E X is working for most folks, if you're not wedded to the whole FRT thing. Some show having to remove the firing pin latch for the Geissele, though.

 

[david walter]

So, maybe just FRT a traditional ar then.