Quote History Quoted:
Pistol grip and screw are the same.
View Quote
Not necessarily true. Any non-beaver tail grip will fit for sure, but many AR10 variants have a higher radius on the beaver tail. Some DPMS-pattern guns are the same as the AR15, but others - my own included - are higher. The MIAD Type 2 fits these, whereas the Type 1 fits the standard AR15 type.
ETA: The AR15 style beaver tail will mount securely and work fine, but there will be a bit of a gap between the grip tail and the receiver.