Yes this rail uses standard barrel, not included.
To install the Troy 15in Alpha Rail, No Sight you will need a standard barrel nut. The barrel nut at the link below should work fine. The armorers wrench at the second link below will also work.
https://www.opticsplanet.com/v-seven-titanium-gi-barrel-nut.html
https://www.opticsplanet.com/midwest-industries-ar-professional-armorer-s-wrench.html
This is the fitment information from Adams Arms regarding the Troy Alpha rail: "Troy Industries Alpha rail (XLP/Micro-requires slight modification to rail to allow access to set screws, and special installation instructions.)"
Adams Arms has an entire support page explaining what handguards will and wont work with their systems. It can be found here: https://www.adamsarms.net/info-media/faq
Please email us at techsales@opticsplanet.com so we can further answer your question.
Please email us at techsales@opticsplanet.com so we can further answer your question.
Please email us at techsales@opticsplanet.com so we can further answer your question.
These are made to fit standard AR-15 rifles.
Yes, this should fit over that gas block.
Yes, but you will most likely need to replace the gas block with a low profile gas block that does not have a sling loop or bayonet lug on it.
This weighs 1.56lbs.