anybody have experience with this dropin?

[cheapo]

http://www.supertactical.com/unlimitshop/product_info.php?cPath=26&products_id=87

$7- very cheap.

 

[x2x3x2]

What a coincidence, I've just happen to have one en route for review
Will let you know then.

Btw, noticed that stuff there are cheaper than DX or KD...