Not all designs should be for profit. We designed this tool to remove and install the front site block on a M4 style ar barrel. With this tool it is much easier to hold your barrel and FSB steady while extracting the press fit pins. This tool will save you some major frustration if you are looking to switch from a standard "A" style front sight block to a free floating rain which will require the use of a low profile gas block. 
 
We offer the .STL file for free for those of you with a 3D printer to create the tool. We recommend printing with 85% to 100% infill with supports.
 
*Note: this is for the digital print file only. If you would like to purchase a printed tool block send us an email.
 
Use coupon code ARBLOCKFILEFREE to remove the $1 cost at checkout 
 
or DOWNLOAD HERE FREE from thingiverse
 
or Email us HERE to order