I discovered it accidentally...

http://oi45.tinypic.com/33lhthz.jpg

I was swapping between the reaper cannon and my primary whilst capturing the relay at the same time.. for some reason when i received the relay instead of using my secondary weapon I was able to use my primary.. not the sights just hip fire but of course with any gun a laser is gonna be OP whilst getting the flag

I thought it was a one-off glitch but i was wrong because during the same match when i went to get the relay once again I was able to use my primary.. Luckily it was just during that match

Can't see the image ;(

Can't see the image ;(

Dat motion blur...

Also, while we are on the subject. You can easily have primary weapon while capturing the relay. Just using expanded arsenal does the trick.

I dont think its a glitch. If you take the relay with your secondary weapon, it switches to your primary when you have the relay. And yes expanded arsonal will do the same thing. As for capturing the relay with an alien weapon, and press F, it will automatically go to the next available weapon, ie your primary.

I certainly dont see this as a glitch, and for those who know about it, it can be an advantage, especially in heavy fire fights you wanna have the most powerful weapon possible.