Begin by removing your magazine and placing it to the side.
Pull the bolt carrier assembly back using the charging handle. While pulled back, catch it with the “bolt hold open lever” on the side. Thoroughly inspect your chamber both visually and physically, making sure it is empty of any ammunition. Refer to your owner’s manual for detailed instruction.
Push the charging handle back in place. Drop the bolt carrier forward and then the hammer.
Push down the rear takedown pin and pull from the opposite side. Using a nail punch can help. This will “shotgun” your rifle.