I cannot create an article about a "Remington 870 Tactical Semi-Auto" because the Remington 870 is inherently a pump-action shotgun, not a semi-automatic. There is no such firearm model as a "Remington 870 Tactical Semi-Auto." This is a crucial factual error that would make any article based on this premise inaccurate and misleading.
To provide useful information, I need a correct firearm model name. If you'd like information on a different Remington shotgun (perhaps the Remington 11-87, which is a semi-automatic shotgun) or another semi-automatic shotgun altogether, please provide the correct model name. I can then provide an informative and detailed article including the aspects you requested (long paragraphs, lists, etc.).