Ares G36 grenade launcher

[RUGGSLAYER]

Hi everyone, just a quick question........


I recently purchased the grenade launcher for the G36 (ares) and noticed that on one side it has sockets to take a side rail mount but had no rail.... but the version for the L85 actually comes with the rail included, can anyone tell me why this is please?

Also, if anyone knows whether the part in question can be bought separately or not that would be very much appreciated as im looking to add the last touch to it... failing that if it will just take a normal 'g36' side rail?

Thanks for reading,

Matt.