First AR15, couple questions

[Kratos]

Just bought my first AR15, very exciting lol. I bought it used, just over 700 rounds through it. Its a NEA 10.5 with a 12 inch rail. The end of the rail (free float NEA slabside) is flush with the end of the flash hider. I dont know the flash hider make but it is closed at the six oclock position (dont know proper wording). I just had a couple of questions and couldnt find anything on the topic. I want to mount a light at 3 or 9, Mbus front sight at 12 (obviously lol) and an AFG2 at 6. I am concerned that is I put these at the end of the rail that the muzzle blast will heat the rail and melt or damage the accessories. I can email pics if it is unclear what i mean but my computer wont upload them onto this thread. Any help will be appreciated, and remember I'm new so go easy lol.
Thanks

 

[Stevo]

You won't see any damage to your accessories from that set-up.

IMO, you're better off with a 9 or 10" rail with that barrel length.

 

[Kratos]

Yeah I thought it would be ok, I'm not sure if the previous owner ran it this way or not. I'm probably gonna get a shorter rail since I don't care for the look of this setup. Thanks for the quick reply

 

[Stevo]

You're welcome.

If you want to post pics here without being a CGN Team Member, you have to host them somewhere on the web like Photobucket.com.