I'm sure the AI action is glued into the stock but (correct me if I'm wrong) I dont think the TRG is.
AI AW has the action bonded to the aluminum chassis, the AI AE MKII has the action bolted to the chassis,being more similar to the TRG so with AI rifles you have two options . The AW is considered more robust and rugged due to the action being permanently bonded,also more expensive but u get what u pay for.
AI AW has the action bonded to the aluminum chassis, the AI AE MKII has the action bolted to the chassis,being more similar to the TRG so with AI rifles you have two options . The AW is considered more robust and rugged due to the action being permanently bonded,also more expensive but u get what u pay for.