Screw together until the top and bottom halves both tighten securely around the circular end cap. The two halves do not come together completely. Using the provided hex key and screws, tighten the two halves of the quad rail to each other.

On the front end, the two halves of the quad rail should fit into place around the circular front end cap.ĥ. Place the top half of the quad rail into place making sure the two halves fit together. The tapered end (the end with the inward curved lip) of the quad rail should point toward the receiver. The tapered end of the quad rail should tuck inside of the delta ring.Ĥ. Using the handguard removal tool, hold the delta ring down and place the lower half of the quad rail handguard in place. The delta ring is spring loaded and should compress downward, allowing for removal of the handguard.Ģ: Remove the hex screws from the Monstrum Tactical Drop-In quad rail, separate the quad rail into two halves.ģ. Remove the stock plastic handguard using the handguard removal tool by applying downward pressure to the delta ring. Hex Key (included in every Monstrum Tactical AR-15 Drop-In Quad Rail Handguard package)ġ. Warning: Always check and make sure the firearm is unloaded before attempting any modifications

Keymod accessories midway