Strange anomaly in hammer++

[lockyblock75]

I was making a test map until i saw the BRICKBAT weapon????
it does not function or appear
i'd love some to restore it in hl2!
(this is really weird, theres weapon_striderbuster too? weird.)

[MegaMan1904]

look, its not anomaly
brickbat isnt in retail code, its remnants is in halflife2.fgd. This file shows hammer what entitys it suppose to view and what model give IN HAMMER ONLY (i think). so yea its basicaly a remnant and nothing else.