Why would you want to ditch a Bergara for loose stock screws and/or loose scope base/ rail? as I stated anwering that post you referred us to ,that is basically an assemblers/ owners realm cured with torque and thread lock,( normal maintenance) A ”terrible” scope rail base is an opinion , based on on what? It holds the scope securely ,mine does anyway , as for the cheek rest ,I can’t say ,I made mine- it’s glued on ,I saw the bolt on type and I do avoid them but yours is unfamiliar to me so I can’t say anything .the gentleman spent money on a rifle he may enjoy otherwise,to suggest he “ditch” it for minor things is ridiculous , no , an extractor is not minor , really ,nor should it break before a few years of service but give them a chance to make good before dragging them in the dirt because it’s not what YOU spent money on.
As far as support and accessories are concerned ,my biggest complaint is they don’t make things like iron and peep sight sets , (triggers , no problem) ,different MOA rails and stock LOP spacers for the BMR ,AND nobody else does either. Replacement repair parts ,can apparently be bought ,if you ask the right people.At he right time but I have not needed any. Maybe I should order some spares to see? Sorry I get long winded sometimes.