Attachment 243676 Attachment 243678
I'd bet that you received P/N 988428 screw; these are slightly longer than the 'short' 986785 screw, but shorter than the longer front screw P/N 987143 (as shown above). The medium length screw is used exclusively on the SL8 optic rail to secure the front and rear sights; they are also used on the 3x optic that goes on a M1913 Picatinny Rail.
Short Screw 986785
Medium Screw 988428
Long Screw 987143
The OAL of the screw you seek is 38mm.
It's unfortunate how quickly G36 parts dried up. Good luck in your quest, OP. I'm sure you will find one in time.
I have a spare aftermarket front mounting screw thats a little long, it has an allan head instead of a phillips drive. It does have the right thread pitch, I can send your one to get you by. Cut to length, cold blue the bare metal..good to go. Contact me if your interested.
So RKS has great customer service - NOT!
Basically told me jm the only one with the problem and to check my washers to make sure they are authentic. I emailed them back and explained to them (again cause I guess they missed it the first time) a) that the washers are authentic because they are being used from an SL8 and b) the washers aren’t the issues because the screw doesn’t fit without them anyway. It’s just short plain and simple. Asked them if it could be one of the SKUs for one of the screws.
No response at all. Apparently they give zero f***s. Great customer service RKS - truly stellar.
Anyway, so now I’m still in search of this screw if anyone has any other leads are comes across one.