A bayonet assembly, for a firearm that has a knuckleguard, includes a rail connected to the firearm where the rail comprises a first position detent and a second position detent. The bayonet assembly may also include a bayonet that, in turn, includes a blade and a slide. The slide may be dimensioned and configured to engage the rail and the slide may include a slide catch that is dimensioned and configured to be engageable with the first position detent and the second position detent. In operation, the bayonet may be slid by a hand that is located within the knuckleguard from a remote position, where the slide catch engages the first position detent, to an extended position, where the slide catch engages the second position detent.