Hop up Questions

I don't know if this is a stupid question but is there a way to put in a one-piece hop up in my M733 that uses a two piece hop up or is it even possible? If it is, how can i replace it?

Upgrade to a metal body with a one piece hop-up included. Kill two birds with one stone.

im assuming the metal body is necessary to put in the one piece hopup, correct?

are there any fairly inexpensive, high quality metal body kits, and can it be done without replacing the body?

You'll need a metal body to make a 1 piece hop-up fit without some serious modding. Plastic bodies aren't made for 1 piece hop-ups.

Look for some of the DBoys metal bodies at various stores. They should cost less than $75 and SHOULD include everything you need.

will they last, or should i invest in something a little more higher end? and what do you mean by some serious modding?

I just reallized that i have an m733 not an m4, now, maybe i am an idiot and it doesn't matter, but better safe than sorry. so here it goes, will a regular m4 body fit my gun or do i have to buy a special m733 body, will a m16A2 body work, and will a body with a removable carry handle work? Is this any good, it is inexpensive, and it says that it is made for a M733?

http://www.airsoftpost.com/product_info.php?cPath=25_97&products_id=28642

It won't make a difference. In airsoft, an "M733" is basically a short barreled M4 with a fixed carry handle, so it can take all M16/M4 parts.

The one you linked will work, but it's not an M733 body. They put the trades on the way wrong style of body, lol...

It also doesn't include the 1 piece hop-up, which is kind of odd. For a better deal, get one of these:
http://ebaybanned.com/index.php?currency=USD&cPath=68_24&sort=2a

And add this:
http://ebaybanned.com/product_info.php?products_id=1120

Shipping is included in the price, so you're looking at about $75 for a full set.