Highly recommended.

***Description:***

You need the WEAPON ANIMATION REPLACERS mod for it to animate correctly.

This mod adds a Mossberg 590A1 shotgun to the game. It has three mods: Tactical Stock, Chrome Parts and SideShells.
Comes with vendor, leveled list and perk integration. If you can't wait to find the weapon or just want to test it, you can find one in Goodsprings at doc mitchel's house next to the vito-matic machine(Next to my sig550, does not occupy the same space). I know its getting old to leave just leave weapons in his house, but it is the most accessible place to test the mod right from the start if it bothers you just leave it.

***Details:***

-2048x2048 Textures
-Three mods: Tactical Stock, Chrome Parts and SideShells
-leveled and vendor list integration via scripts(helps compatibility)
-scratch made models and textures
-appropriate perk integration via scripts(most notably shotgun surgeon)

***Known issues***

There is one error on the textures on the model at the rear end of the shell cylinder that shows up black, apologies I tried to figure out what's causing it(Not the uv's, or textures and model seems fine in nifskope).

Pistol grip clips through hand when aiming the weapon(I did not want to reduce the weapon size to make it fit perfectly because I prefer a more realistic scale. The idle stance fits perfectly and you don't see the clipping in 3rd person mode without rotating around the character. 

***Compatibility:***

This mod should not conflict with any other mod.
PM me on nexus if you find any bugs or problems.

***Installation:***

Copy and extract the archive to your data folder and check the esp.

***Programs used:***

3ds max 2012
Nifskope
Photoshop CS5
XNormal
Nvidia filter plugin for photoshop
G.E.C.K. for New Vegas

***Permissions:***

Please first ask for permission and I will try to respond ASAP. Re-textures and variants are permitted without asking, but you may only upload on nexus, else ask for permission.

***Credits***

Bethesda 
Obsidian 
Millenia for his excellent tutorials
Creators of Nifskope
Nexus site and community for help and support

Thanks for downloading, enjoy and pardon my bad english, it's not my first language. Always happy to arm the wasteland and endorsements appreciated.