From Halopedia, the Halo wiki
The Bmur'resh-pattern gun pod is a variant of the venerable Shade series of stationary turrets employed by both the Swords of Sanghelios and Jul 'Mdama's Covenant during the Battle of Kamchatka, Battle of Nuusra and the Battle of Sunaion in 2558.
The Bmur'resh-pattern is a Shade variant based on the more common Eeo'Pimu-pattern Shade employed during the Covenant era, reverting restrictions formerly instituted by San'Shyuum munitions-cyphers. The open frame of the turret is lightly-armoured to balance ease of access and operator protection, with some variants providing additional ablative plating and energy shielding to supplement this. The standard Bmur'resh is equipped with two plasma cannons sitting on a mount featuring four immovable legs, vaguely resembling the body of the zoto'kel crab.
The Bmur'resh was developed by Achoem Weapons with the first production run being created in their manufacturing plant on Hesduros. The design was created in the aftermath of the Great Schism and leveraged the lack of San'Shyuum oversight to bypass previous Covenant armament restrictions on the designs, resulting in a more powerful variant of the commonly-fielded Covenant Eeo'Pimu-pattern Shades.
In Halo 5: Guardians, the Shade Turret remains similar to its Halo: Reach counterpart. The anti-air Shade turret also returns, although it is now usable by the player, but it no longer has energy shielding and is now weaker than the standard Shade. The anti-gravity base supporting the gun now includes four prongs.
Should a Shade be destroyed, it leaves behind burning wreckage. If a player touches the wrecked Shade's burning anti-gravity base, they will take damage from it.