thanks Hey guys. So I had a budget of $350-$375 for a gun plus recoil pad. This guns primary function was for shooting dove, secondary function would be Home Defense and range gun. I was looking to possibly get a Turkey Thug 500. Deciding to take my time and not rush into a purchase, i waited. During that time I came across a never used M500 JIC for $150!!! Needless to say I bought it, and for less than half my budget. Technically I bought it for $135 because i sold the pistol grip for $15. So now im going to make a log of everything i install or buy for this gun. Once ive used the upgrades ill review if they work and how they hold up. And since im on a budget im trying to find the cheapest prices i can without buying junk. Heres the shotgun when i first got it home. Thing was covered in packing grease, and that stuff smells funky, the jic tube is a big stink bomb since it has that smell in it. lol ITEM: UTG Picatinny Rail PRICE: $6.99 PURCHASED FROM: Amazon TOOLS USED Hex wrench, Blue thread lock, 1/8" slot screwdriver This was a pretty straightforward install, no issues. 1/8 screw driver to remove thread screws from reciever. Provided hex wrench to attach mount. Added some thread lock to keep screws from coming loose. I think it looks good for $7. ITEM: Knoxx Compstock PRICE: $82.99 PURCHASED FROM: OpticsPlanet TOOLS USED Forend- Butter knife, End of a broom Stock- 1/4" hex, skinny long screwdriver, extra tools due to bolt issue 1/2"socket/extension/rachet Forend- Luckily my m500 had the new forearm design, so i didnt have to order anything extra. I had my gun completely broke down since i had cleaned it. Using the butter knife i removed the nut from the forearm. I looked around everywhere in my house and found that the broom stick handle was a perfect fit to put inside the forearm tube to pull the original off. The new Houge forearm slipped right on without issue. I really like the feel of this forearm, its got a nice rubber texture. Really easy to grip. Stock- WARNING, PISTOL GRIP OWNERS WILL NEED STANDARD LENGTH STOCK BOLT First problem i came across is the fact they dont provide a bolt in the kit, so you have to use factory stock bolt. Well for pistol grip owners its a problem, not a big one though. If you contact Mossberg they will send out the bolt for free. So just make sure you call Mossberg when you order your stock and your good. Since i wanted to get it together i went and bought a bolt to use until i get mine in the mail. Besides that, easy install, no issues, the instructions included are step by step. You will need a long skinny screwdriver to secure one of the screws. Also I added alittle tetra gun grease to the rail that the stock rides on.