Power Armour - Mark X Power Armour Specifications (Tacticus and Gravis Variants): Mark X Tacticus Helm - This design, used by the Primaris Space Marine Intercessors, incorporates elements from the most sophisticated prior marks of power armour, the Mark IV Maximus and Mark VIII Errant Patterns, in addition to new systems and adaptations.Reinforced Vambrace - Primaris Space Marine sergeants, lieutenants and other officers incorporate communication cogitators.Poleyn - A kneeplate with raised guard provides added protection to the joint.Pauldrons - Shoulder pauldrons incorporate a second armour layer. Reactive armour and curvature increase the Mark X armour's protection potential.Mark II Cawl Pattern Bolt Rifle - Like all weapons in the bolter family, the Bolt Rifle fires small, self-propelled projectiles known as bolts which explode with devastating effect. The Mark II Cawl Pattern Bolt Rifle has a longer range and slightly more penetrating power compared to the standard-issue Firstborn bolter.Socket Ports - Socket ports on the cuisses (thigh armour) provide easy access for stim-injectors and diagnostic data-links.Honours - A Dominus-class Purity Seal and attached oath-papers are commonly worn.Ankle Joint - Heavily reinforced ankle join, (ref. Mark VIII Errant Pattern)Plastek Mech Belt - Plastek mesh belt and equipment pouches allow the wearer more waist movement.Mark X Backpack - The Mark X armour's backpack, with reinforced armour plates in line with the armour's overall design.Backpack Venting Ports - Backpack thermal venting ports are now incorporated into the backpack to allow for more efficient venting of waste heat.Power Cabling - Standard conduits for power distribution.Bolt Pistol - An additional compact model Bolt Pistol sidearm is now commonly worn as a backup weapon.Reinforced Undersuit - This reinforced undersuit adds to the comfort of the Astartes within as well as an extra layer of protection.Mark X Gravis Inceptor Helmet - The Mark X Gravis Pattern helmet used by Inceptors possesses an expanded rebreather filter for low-orbit combat drops.Helmet Cowling - A helmet cowling and gorget are able to seal off during orbital descent.Ablative Armoured Tasset Plates - Ablative armoured tasset plates provide additional protection on the hip and lower pelvis area.Inceptor Pauldron - Pauldrons with a third-layer of armour, compared to only two on the standard Mark X Tacticus Pattern armour.Assault Bolter - A short-ranged, hand-held variant of the Heavy Bolter which incorporates a blast shield and large box magazine with high-speed uploader.External Hydraulic Footplate - The Inceptor uses these footplates to control the power and direction of his Jump Pack's thrust.Grav-Chutes - Grav-Chutes, for controlling low-orbit drop speeds.Grave Vanes - Grav vanes provide optimised manoeuvrability during low-orbit drops.Guidance Thrusters - Secondary guidance thrusters integrated into greaves.Main Thrusters - The Jump Pack of the Inceptor variant of Mark X Gravis armour is fully integrated into the rest of the suit, unlike the lighter Jump Pack used by standard Firstborn Assault Marines, who wear it over the earlier marks of power armour as a separate device.Guidance Thrusters - These thrusters provide the variable thrust needed for the Inceptor to control his flight.Power Cabling - Power cabling on the back of the greaves provide auxiliary power to the armour's secondary thrusters.