The right side rail on Rahim 7.62mm has a rail cover. After attaching a laser pointer or a flashlight, the rail cover is still present and clips with the right side rail attachment.
The holding animation for Rahim also has fingers that clip through any side attachments present.
{F22538} {F22539} {F22540}
Potential solutions for the rail cover are either to remove it completely from the model or hide it when the pointer attachment is present.
Potential solutions for the fingers clipping could either be simply moving of the hand/fingers or since the weapon has a bottom rail, include some kind of a grip on it and use that for the hand placement.