Ahhh the Geissele coolade! Hey they are GREAT triggers, no doubt! Are they better than J.P. well I think they are the same. BTW back about 7 years ago we did quite a bit with the guys at Cambell, Brag and Irwin and the J.P. was considered tier one stuff. Although it isn't advertised the J.P. trigger works in the full auto mode as well as the Geissele, the reason the J.P. wasn't accepted at the time was a matter of production VOLUME. Geissele could and has made the quota for the Mark-12 rifles. This isn't to say that the Geissele isn't a great trigger... it is great, but for half the cost....J.P..... at least for me.
As an aside I have over 50,000 rounds on one in a full auto GAU-5 and it is still working great! KurtM
Wish I would've known that before I popped for the SSF! *sigh*
Oh well, at least I got a great deal on it!