Who made the gun?I know its a cobray but it should have a stamping at the back like fmj,leinad,swd,nighthawk,texas mac(stephenville),power springs or masterpiece arms.The reason I ask is because some makes are different internally than others.Some used powdered metal,some laminated steel and others cnc machined.
no, its not normal for them to be that tight.
they will loosen up after you put 3-500 rounds through them if everything is fine.