Where to buy quad rails for AR-15

[HardBoiled]

I'm interested in purchasing my 1st AR-15 like rifle. I've narrowed it down to 2 rifles mainly due to there cost as I don't got shooting lots.

Ruger AR-556 https://www.gotenda.com/shop/firearms/restricted-rifles/ruger-ar-556-5-56-nato-rifle-16-model-8501/
S&W M&P15 Sport II https://www.gotenda.com/shop/firearms/restricted-rifles/smith-wesson-mp15-sport-ii-223rem-556-16/

For either rifle though I would like to replace the current round font handle with a rail system so I can mount a fore grip. The most common thing I saw was a quad rail.

My question here is looking on the web I have only found literally like 1 or 2 sites and they won't ship to Canada. So I was hoping other people had wanted to do something similar and could point me in the right direction.

I'm also open to the idea to a different, but similar rifle which has this component already added. I was hoping spend around $1000 for the base rifle before I start modifying it.

Any guidance would be appreciated.

 

[Kjm1971]

True North Arms and many other site sponsors

 

[hbean]

Have you tried any of the sponsor listed above?

 

[Wester]

FYI, quad rails are getting out of favour due to the unnecessary weight and size they add to the fore end and for their cheese grater nature. There are a number of hand guards with M-LOK or Key Mod slots to add components, M-LOK seems to have the nod for future proof modularity though.

I also just bought the S&W M&P15 Sport II and swapped out the hand guard with a Magpul SL. The fit is perfect, no wobble, it adds an extra bit of protection from the gas block and allows a further forward hand hold. Replaced a few other bits too but bought it at True North Arms.