I agree that it is a gun problem. My own thinking is that life is too short to wast time on a malfunctioning gun.
Send it back at their expense under warranty.
Ecclesiastes 12:13 *¶Let us hear the conclusion of the whole matter: Fear God, and keep his commandments: for this is the whole duty of man.
14 *For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.