The CMC Triggers AR Lower Assembly Trigger Kit might work with a DPMS AR10. However, do to dimensional differences between AR15's and AR10's as well as many AR10 models having different specifications fitment cannot be guaranteed.
The trigger will fit a firearm that uses mil-spec trigger groups and has the cavity milled out to accept a drop-in style housing. There are specific PCC triggers because of the abuse that blowblack firearms impart on to the trigger group, so we normally recommend going with a trigger meant for pistol caliber carbines like this: https://www.opticsplanet.com/cmc-triggers-ar-single-stage-9mm-trigger-pull.html
No, the screw for the grip is not included.
No, some parts are compatible, but not all of them.
It comes with the anti-walk pins.
Yes, it does.
The trigger will fit a firearm that uses mil-spec trigger groups and has the cavity milled out to accept a drop-in style housing. There are specific PCC triggers because of the abuse that blowblack firearms impart on to the trigger group, so we normally recommend going with a trigger meant for pistol caliber carbines like this: https://www.opticsplanet.com/cmc-triggers-ar-single-stage-9mm-trigger-pull.html
Yes, it will include both of the takedown pins, springs and detents.