Both models are the same length, they just use a different rail system. Please email us at TechSales@OpticsPlanet.com so that we can go over compatible options.
Yes, this handguard has mounting slots on the bottom that can be used for attaching a vertical grip.
That handguard can be found here: https://www.opticsplanet.com/vism-ar15-m-lok-carbine-handguard.html
MPN: VMARTKMC will be the correct length however, this handgaurd was made to fit an A2 style gas block/front sight and may have trouble fitting around a larger railed gas block.
No it will not.
It should as long as you have a mil-spec A2 front sight with the bayonet lug. This is meant to fit either a carbine length gas system or midlength gas system and fit around an A2 fixed front sight.
MPN:VMARTKMC - Carbine
MPN:VMARTKMM - Mid-length
Yes, the carbine length model will fit most Ruger AR-556.
MPN: VMARTKMC is for a carbine length gas system, which the Ruger AR556 has, so it should fit. Due to Ruger's proprietary delta ring, tolerances may be tight and may require minor fitment.
VISM says:
"It depends on which handguard. The Carbine Length works with the round handguard end cap and the Mid Length works with the triangle end cap."
Mark h.