Yes, the Aero Precision AR-15 Magpul MOE Lower Parts Kit is designed to work with Mil-Spec Lowers.
Aero Describes the product as included accessories: Magpul MOE Grip in Black or FDE, Magpul MOE Trigger Guard in Black or FDE, Takedown Pin, Pivot Pin, Takedown/Pivot Detent, Takedown/Pivot Spring, Bolt Catch, Bolt Catch Buffer, Bolt Catch Roll Pin, Bolt Catch Spring, Magazine Catch Body, Magazine Catch Button, Magazine Catch Spring, Buffer Retainer, Buffer Retainer Spring, Safety Selector, Safety Selector Spring, Safety Selector Detent, 4-40 Set Screw (for threaded takedown pin detent hole)
This parts kit should have come with all of the "Included Acessories" under the Product Info on this page.
Yes, it includes the Magpul MOE polymer trigger guard.
Aero Describes the product as:
Includes:
Magpul MOE® Grip in Black or FDE
Magpul MOE® Trigger Guard in Black or FDE
Takedown Pin
Pivot Pin
Takedown/Pivot Detent
Takedown/Pivot Spring
Bolt Catch
Bolt Catch Buffer
Bolt Catch Roll Pin
Bolt Catch Spring
Magazine Catch Body
Magazine Catch Button
Magazine Catch Spring
Buffer Retainer
Buffer Retainer Spring
Safety Selector
Safety Selector Spring
Safety Selector Detent
4-40 Set Screw (for threaded takedown pin detent hole)
Please note that Magpul's description of the trigger guard is "All mounting hardware included", so there are trigger guard pins.
Mark H.