The following weapons were used in the film Ah Boys to Men 2:
Assault Rifles
SAR 21
The SAR 21 is used by Singaporean Army soldiers as their main assault rifle.
ST Kinetics SAR 21 - 5.56x45mm NATO
A Ninja Company soldier fires his SAR 21 from his perspective.
Man In Ping aka Ip Man (Noah Yap) shouts while porting his rifle.
Bang "Lobang" Lee Onn (Wang Weiliang) gives suggestions to his mates while acting strange next to his rifle.
Ken Chow (Joshua Tan) with his SAR 21.
Half of the SAR 21 has gone AWOL.
NC soldiers in a marching parade at Marina Bay at the end of the movie.
Machine Guns
FN MAG
The FN MAG is used by the Singaporean Army as the main GPMG. CGI Merkava tanks are also seen with the mounted FN MAG as a co-axial weapon.
FN MAG 58 - 7.62x51mm NATO
Singaporean soldiers use the FN MAG by firing it over the heads of Ninja Company to simulate battlefield conditions.
M240C vehicle coaxial-mount version for comparison - 7.62x51mm NATO.
CGI Merkavas show up on the escalator during an imagination sequence.
M61 Vulcan
The M61 Vulcan is used on CGI miniature F-16s.
GE M61A1 Vulcan Cannon - 20x102mm
A CGI F-16 flies over a food court.
Grenades
SFG 87
The SFG 87 is seen as the grenade used by the Singaporean Army. In the movie, live and training versions were used.
Alex helps to prevent the grenade from going off since there's no safety pin.
In this shot, it appears to be a plastic version. This is likely used in the scene for safety reasons.
Aloysius gets the training grenade from his vest.
A NS soldier preps the training grenade, simulating it as a live grenade for throwing.
Mines
M18A1 Claymore
The M18A1 Claymore is seen with Ninja Company when they conduct basic training in Pulau Tekong.
M18A1 direction Claymore Mine
Aloysious hands a fake Claymore to Ken.
Muthu takes the fake Claymore from Ken.
You can see the hole on the fake Claymore.