Thankyou Raheel bhai 
Brother. Sirinagar coach service tickets can be booked from Lari adda for Lahore to Muzaffarabad against PKR 700. Service is not bad. They have air condition daewoo buses. I think har 2-3 hours k baad nikalti hay bus. We got the bus from Muzaffarabad at 11:00 PM. It droped us Lahore Lari adda at 08:00 in the morning.
Irfan sahab i purchased it from "Outdoor Adventure Lahore". Un k paas last piece tha ye os waqt. i think shayed or aa gaya ho ga. Price PKR 2,800. Is mai butane gas cartridge lagti hy. Price of 1 cartridge was PKR 375. Ek cartridge mai 4 persons ki 2 times karahi and 1 time tea ban sakti hy. Its quite handy.
Further, un k paas Kerosene stove bhe tha same company ka. wo bohat aala cheez hy bus price ziada thi PKR 9,000. Weight and size is sy bhi kam tha. Please feel free to ask anything else you want