I have for sale couple Geissele SSA-E triggers:
(https://vtsupply-com.3dcartstores.com/assets/images/products/IMG_4488-SSA-E-Trigger.jpg)
https://www.primaryarms.com/geissele-automatics-super-semi-automatic-enhanced-ssa-e-two-stage-ar-15-trigger-.154in
290 euros, shipping included.