The Jewell trigger should fit in any gun that takes a standard AR-15 trigger. If you want to be sure, ask Jewell ( (512) 353-2999 and ask for Tommy).
Having said that, although I am a Jewell fan due to Rem 700 usage (and my AR-15 Jewell runs really well): I recently paid almost $150 to have my Jewell AR-15 trigger replaced under warranty. The sear chipped, Jewell referred me to the Canadian distributor for warranty, the distributor told me I would just pay shipping to and from Jewell. The final invoice was marked "shipping x2 plus repair cost", and he must have charged an amazing amount for shipping, especially given that I had to wait for his next Jewell order to come in - the trigger was put into it rather than being shipped separately.
So yep, the trigger is great, but the warranty service in Canada is poor. I'm thinking of a Geissele as a result, for my next precision AR.
Will still use Jewells in 700s, because there isn't anything to break in that design. Live and learn.