Well L96 nasty magazine

Ok so i finally have a decent gun which is quite obviously the well l96 sniper rifle.My problem is that the mags don't like going into or out of the gun anymore.I was wondering what lubricant would be best to fix this problem?
On a side note, are they're any immediate upgrades that I should be looking at for this gun.Thanks in advance for all those who respond.

Have you painted the gun? If so sand the walls of the hole (sorry Im tired and on vacation so sue me if I cant remember the right terminology) the mags go into.

Ok I will try that tommorow,oh ya I guess thats today.

If they are not the Well branded mags, you may need to sand down the spacers on the mags as well...seems to me we had that problem with one of Drache's VSRs when using DeepFire mags.