MF'ing Grip for AR-15*/M4/M16 Variants
*AR-15 is a Registered Trademark of Colt's Manufacturing Company

STEP 1:  Ensure that the firearm is pointed in a safe direction.  While keeping your finger off and away from the trigger rotate the selector switch into "Safe".  Unload the firearm according to the manufacturer's instructions and ensure that the chamber is empty.

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STEP 2: Small Part warning. Place the firearm on its top, so the bottom of the grip is pointing towards the sky.  (This will help prevent the spring and detent for the selector switch from falling out).  Remove the factory grip by unscrewing the grip screw in the bottom of the lower receiver.  

 

STEP 3:  To install the MF'ing Grip, slide the Shield (the part with our Shield logo) rearward to put the MF'ing Grip into installation mode as shown in the video.

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STEP 4: Use the provided American-made grip screw and align the MF'ing Grip to the lower receiver of the AR/M4, ensuring that the selector switch spring aligns with the spring retaining hole in the MF'ing Grip and the lower receiver. HAND TIGHTEN the grip screw and the MF'ing Grip onto the lower receiver.  The MF'ing Grip is now in Fast Access (FA) mode. We recommend using the 1/4"-28 x 3/4" American-made grip screw that we provide.  However, if you choose to use a different grip screw, DO NOT USE THE LOCK WASHER that some screws come with.  The lock washer isn't compatible with the MF'ing Grip.

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STEP 5:  Ensure that the "Shield" of the MF'ing Grip slides forward and touches the lower receiver at the magazine well, covering the trigger opening.  If the Shield will not slide forward, make sure the selector switch is in "Safe" and try again.  If the Shield still doesn't slide forward, check to see if it's making contact with the bottom or sides of the trigger guard.  If so, the width or dropdown of the trigger guard it too large and is interfering with use.  Either uninstall the MF'ing Grip, or if your lower is forged, replace the trigger guard. 

 

STEP 6: With the Shield in the forward position, look at the Sliding Switch on the underside, which offers 2 positions ...

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Slide the Switch to Symbol "ϴ", which is "Restricted Access" (RA).  A release button should be protruding out of the underside of the MF'ing Grip, restricting movement of the Shield.  Ensure that the Shield's movement is restricted by the Release Button.  Also, ensure that the Selector Switch can't be rotated out of "Safe*" (some movement may occur, but not enough to disengage the safety). *This only works with full-size / Mil-Spec selector switches, NOT "Short-Throw" selector switches.  

 

Press the Release Button in while simultaneously sliding the Shield back over the MF'ing Grip housing, into FA mode.  -Caution- Pinch Point - Keep the grip screw area clear - Smack the back of the MF'ing Grip, rotating it into Ready To Fire (RTF).  With the unloaded firearm pointed in a safe direction and your finger off and away from the trigger, ensure that the Selector Switch rotates into all available positions, returning the selector switch to "Safe". Pull the Shield down, rotate the MF'ing Grip into FA, and slide the Shield forward, ensuring it touches the lower receiver at the magazine well, covering the trigger opening, ensuring that the Release Button is protruding and restricting movement of the Shield.  Make sure that the Selector Switch doesn't fully rotate out of "Safe*".

 

Repeat this step multiple times, ensuring proper function of RA mode.

 

With the MF'ing Grip in RA, hold in the Release Button and move the Sliding Switch to Symbol "Ο", which is Under Cover (UC).  In UC mode, the MF'ing Grip Shields the trigger/trigger-guard area, keeps the selector switch in "Safe*", and retracts the Release Button out of the way .  *This only works with full size / Mil-Spec selector switches, NOT "Short-Throw" selector switches.

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As you did with RA, perform multiple function tests in UC mode, remembering the -Caution- Pinch Point - area of the grip screw. ​​​

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 ​STEP 9:  The MF'ing Grip has a total of 3 different size backstraps.  The most common/preferred size is Medium, which comes pre-installed.  To change the backstrap, put the MF'ing Grip into UC or RA mode. This will allow acces to the roll-pin that holds the backstrap in place.  Small Part warning, change over table or workbench. To remove the roll-pin, use a screwdriver or punch to push it completely out. Slide the backstrap while lifting it off of the MF'ing Grip. Select the backstrap you want to install and place it onto the back of MF'ing Grip.  Slide the backstrap while pressing in the roll-pin.  Ensure that the roll-pin is flush on both sides to prevent interfering with movement of the Shield. 

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STEP 10: Always exercise proper firearm safety and handling, train with your firearm and the MF'ing Grip, exercise your 2nd Amendment Right, and use your discretion on how to properly store your firearms, obeying all federal, state and local laws.​​​​​​​​​