In Battlefield 3 for the PC, PS3, and Xbox 360, you unlock special weapons and equipment in each kit by getting a certain number of points using that kit.
Here is the list of points you need in each kit to unlock the specific weapon or equipment you may want.
Assault Kit
4,000 points – Defibrillator
11,000 points – M320
22,000 points – M416
38,000 points – M26 MASS
60,000 points – AEK-971
89,000 points – M16A3
124,000 points – F2000
166,000 points – AN-94
220,000 points – American: AK-74M, Russian: M16A4
Engineer Kit
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
Recon Kit
5,000 points – T-UGS
13,000 points – SV98
26,000 points – SOFLAM
45,000 points – MAV
71,000 points – SKS
104,000 points – M40A5
146,000 points – M98B
195,000 points – American: SVD, Russian: MK11 MOD 0
Support Kit
4,000 points – C4 Explosives
11,000 points – M249
23,000 points – M18 Claymore Mine
40,000 points – M224 Mortar
60,000 points – PKP Pecheneg
90,000 points – M240B
130,000 points – M60E4
170,000 points – American: RPK-74M, Russian: M2 IAR
