Wobbly keymod

[ziontrain]

I've picked up a Fortis foregrip for my Krytac CRB, but when I try to install it it's really wobbly. I can't tighten the screws any further.

I've seen a suggestion that it needs longer screws - would that help?

 

[Albiscuit]

Have the same issue with my SPR!! 

I am am sure there’s an easy solution, a squirt of this or a dab of that on the thread maybe but hopefully some bright spark on here will have an answer..

 

[BigAl]

One may be Airsoft spec and the other RS spec, just one of the disadvantages of keymod.