What throws the AR shooters is that there is a specification for a heavy barrel for an AR-15/M16, and they mistakenly think it applies to all other firearms. This barrel is sold as an AR-15 bull barrel. It has flutes, but theyâre not a requirement for a bull barrel. An AR heavy barrel would be much thinner than this.Thereâs no exact specification for a bull barrel.In fact, the modifiers âbullâ and âheavyâ can be used interchangeably.hat throws the AR shooters is that there is a specification for a heavy barrel for an AR-15/M16, and they mistakenly think it applies to all other firearms. This barrel is sold as an AR-15 bull barrel. It has flutes, but theyâre not a requirement for a bull barrel. An AR heavy barrel would be much thinner than this.
Gastrointestinal Side Effects. Consuming too much iron may produce gastrointestinal side effects such as heartburn, diarrhea, constipation, discomfort, nausea, liver damage, vomiting blood, black and bloody stools and metallic taste in your mouth. Nervous System Side Effects. Excess iron intake can negatively affect your nervous system.
You may have noticed after taking iron that your stools have turned black or dark green. While your first reaction might be, âYikes! Something might be wrong,â donât be alarmed. Black or dark stools are a common side effect that may be the harmless result of unabsorbed iron. Whether you are taking iron supplements alone or a multivitamin with iron, you may experience this. Other things that may cause black stools include: Foods that are dark blue, black, or green.