Change trigger guard assy MK2 HC to MK2 with normal safty?

I`m searched for the answer everywhere soon.....

I have a Browning Bar Longtrac(MK2) HC 308.

Mine question is if i can simply buy a MK2 trigger guard assy with normal safty and mount it instead?

Next question is if i instead can buy a MK3 trigger guard assy without HC and mount? (better pull)

The reason for this is i want to mount a AR-15 stock adapter on mine BAR and they dont make them for MK2 HC. Only for normal MK2 , MK3 and MK3HC.

Lars B
Piteå SWEDEN