In Battlefield 3 for the PC, PS3, and Xbox 360, there are several weapons and equipment items you can unlock by getting a certain number of points using the Engineer Kit.
Here is the number of points you need to get with the Engineer Kit in order to unlock certain weapons and equipment.
3,000 points – FIM-92 Stinger (US)
3,000 points – SA-18 IGLA (RU)
7,000 points – M15 AT Mine
14,000 points – SCAR-H
25,000 points – EOD Bot
40,000 points – M4
58,000 points – A-91
82,000 points – FGM-148 Javelin
110,000 points – G36C
145,000 points – American: AKS-74u, Russian: M4A1
Check out my other guide if you’re looking for the complete list of unlockable weapons and equipment for all kits in Battlefield 3.