V308 info and instructions
This product is intended for full size/large frame receivers, these may or may not fit small frame variants.
Due to the variety of manufacturer's , we cannot guarantee these will fit your combination of parts. We've listed the measurements and dimensions that we have found to work correctly - the tail of the bolt must be 2.2" in order for the bolt carrier to move the lever.
Tail of the bolt - 2.2"
ATTENTION AERO PRECISION M5 owners : at this time, we do not believe the Aero M5 lower is compatible with our V308 sets due to the distance between the safety selector hole and the top of the receiver.
V.308 lever and safety installation:
Take the included machine screw and lock washer and thread them into the lever using a 5/64" allen wrench. Loctite or other thread locker is recomended to prevent the machine screw from loosening up and backing out. Thread on the included spring onto the machine screw. Your lever is now assembled.
Install the Push Button Safety from the left to the right, with the keyhole slot entering the receiver first and facing up. With the Push Button Safety flush with the interior left hand wall of the receiver, place the lever into the receiver in front of the Safety.
The "tail" of the lever will be pointed to the buffer tube. If it is installed backwards, it will not function correctly.
Push the Safety into the receiver until the lever and Safety lightly touch and then align the keyhole slot with the lever by twisting the Safety into position. Once aligned, press the Safety all the way through the receiver.
While maintaining pressure on the Safety, roll the receiver upside down until the hole for the safety selector detent is facing up - insert the included detent rounded end first into the hole in the receiver. Twist/pull the Safety until the detent is correctly positioned in the detent slot on the Safety.
Install grip with the safety detent spring prepositioned inside the grip. Tighten screw until it stops. Test Push Button Safety - it should easily move between positions with enough resistance that it wont move unintentionally or by a slight accidental bump.
All the way to the right is Fire. All the way to the left is Safe. The middle positon is Active Safety.
We advise against shortening or cutting the stock safety selector spring - our detents are manufactured to duplicate the OEM detent length.
V.308 fitting and modifications
The upper receiver will need to be modified to allow maximum movement of the lever. The slot/opening will need to be extended to the rear take down lug. A dremel will work if you're careful.
The top of the lever will need to be lightly ground/sanded if the bolt binds while manually cycling the action. Due to the various manufacturers tolerances and lack of standardized dimensions with the AR308 platform, there is no "magic number" and each lever will need to be handfit to the rifle. The lever needs to fit inbetween the upper receiver and the bottom of the bolt carrier when the bolt carrier is in its fully rearward position.
With an assembled unloaded rifle placed in the safe position - start by hand cycling the bolt and when the bolt binds, you'll need to either tap the muzzle against something firmly in a downwards motion to free the bolt or remove the upper while the bolt is partially retracted. Lightly grind/sand the top of the lever, and then mark the lever with dykem layout fluid or a Sharpie type marker .
Reassemble the upper and manually cycle the bolt a couple times, open the action and if there are visible marks on the top of the lever where the layout fluid/sharpie were scraped away by the bolt binding on the lever you'll need to lightly grind/sand there. Repeat this process of marking/lightly grinding until the bolt freely cycles manually.
High Shelf Lower Receivers:
Certain brands and models of lower receivers have a shelf behind the safety selector hole that is higher than the halfway point of the safety selector hole. If your receiver is a “high shelf” you will need to cut the portion of the shelf directly behind the safety selector hole to allow for the lever to freely move to its rearmost position. Using our push button safety assembly with a high shelf receiver that hasnt been cut to allow for the free movement of the lever may result in the lever being damaged by the bolt. We’ve found that a dremel carbide cutter will easily cut the shelf directly behind the safety selector and allow free movement of the lever.
