Gen 1 uses the HAVOC factory 0.5" long 1/4-20 set screw to mount the launcher to the top rail by friction. These set screws pushes the launcher against the top rail.
One of my customer said he doesn't think it is a safe way to attach the launcher to the stock. Thus I improved my design. Gen 2 replaces the friction mount with actual screw mount. The under side of top rail is smooth now with only 2 holes for 1/4-20 brass inserts. You will also need 2 0.75" long 1/4-20 set screws to replace the factory one.

Parts necessary for this stock:
3× M5 nuts,
1×M5×30 bolt,
1×M5×35 bolt,
1× M5×70 bolt,
1× M5 washer,
2× 1/4-20 brass inserts,
2× 0.75" long 1/4-20 set screws,
0.25"×0.25"×5.5" rod (metal or wood).

March 17, 2025 update:
1. Combined 12" and 8" barrel models into the same zip.
2. Added step file.
3. Added picatinny rail stock.

LBRY Tags: art; firearms; sport