mossberg 500 .410 gauge moifications???

[starsandstriper]

i picked up a mossberg 500 .410 gauge shotgun at wallmarts firearms clearance. they were no longer going to sell firearms at this given location. the price, $150.00 brand new . now i am bored and wish to customize it. do any of you know where to find aftermarket parts for a .410 gauge model 500, i am stumped . links and web addresses would help. thanks