Dsel are you still having troubles with straight shooting your carbine?
Have you at any time taken it apart to check and self diagnosis if possible? The barrel and chamber block is one unit and attaches to the receiver by roll pin(s). The receiver being an alloy there's a very slim chance something could be
**** or broke and with each shot the broken piece pulls away to throw off your shots.
If you can't or don't do a simple disassemble to pull the barrel/receiver out of the stock, you'll never know as an easy check to see.
Another possibility is you're not resting your cheek on the stock correctly and not looking through the peep sight at the front post correctly. Have you ever had any friends do a shoot check to see if it's really the carbine or just your shooting posture? You would also need to set the rear sight back to center to find out. I've already mentioned in an earlier thread how to adjust the front sight. It goes opposite way in which the rifle shoots. If shooting far LEFT, then loosen screws and push front sight post to the RIGHT. AGAIN, bring rear peep sight back to center.
Last resort is send the firearm back to MOM just to have them realign the sights and say it shoots fine(on target) and it's your shooting style. So you need someone who's more familiar with rifles to help you out as all we can do is give you suggestions on what could be wrong without being able to see the gun.
Tell us what you're doing and have checked, to know those are now things that can be eliminated in the problem solving. But, you must do a disassemble to let us know what you've done/seen/inspected just like when you disassemble a pistol, which you are more familiar with, to inspect for ANY shooting problems.