Hi,

I'm after a Crosstac or Crosstac clone (if it exists) picatinny rail that attaches to where the bayonet usually would on an AR/front sight block (see pics).  

I don't really want to pay the best part of a hundred quid for one from Brownells and can't find a clone one anywhere so if anyone has anything...??  I know you can get picatinny adapters that will attach to either side of the A2 sight posts but I'm specificaly after one that attaches to where the bayonet should (I have a 6 inch KAC handguard that has a M720V torch and foregrip attached, the foregrip is too far back for me so I need to move it all forward, I don't want to replace the torch either at this point).

Brownells ad:  https://www.brownells.co.uk/AR-15/M16-FRONT-SIGHT-PICATINNY-RAIL-Front-Sight-Picatinny-Rail-CROSSTAC-Black-Anodized-Tactical-Mount-Picatinny-Rail-100015272

And video:  

Thanks in advance.

Stu