The gap between the turret and hull was sealed with an inflatable hose while the main gun mantlet, commander ’ s cupola and radio operator ’ s machine gun were given special rubber coverings.

Under John of Gaunt, the gateway was blocked, and the entrance to the castle carried around to the left via a mantlet wall and tower, rendering the gatehouse a more secure traditional keep.

Early versions of the Jagdpanzer IV carried two standard ( no modification made ) MG 42's on both sides of the gun mantlet / glacis, firing through a ball slot which was protected by an armored cover ( with the MG 42 retracted ) when not in use.

A single Super Pershing was shipped to Europe and given additional armor to the gun mantlet and front hull by the maintenance unit before being assigned to one of the tank crews of the Third Armored Division.

Towards the end of the production run, a prototype SU-122 was built with the same ball mantlet as the later SU-85s.

At the same time, the 85 mm D-5S, which had proven both effective and reliable, was modified to include a telescopic sight and a new ball mantlet design and retitled the SU-85-II.

It used the hull of the IS-2 or IS-2 model 1944 tank, the armour of the mantlet was increased, the gun was replaced by newer variants, a 12. 7 x 108 mm DShK anti-aircraft machine gun was installed by the right forward hatch and later its ammunition capacity increased, the 10R radio set was upgraded to a 10RK and the fuel capacity was increased.

In the area of the gun, where the mantlet combined with the hull front behind it and the housing of the recoil mechanism, the armour thickness was 320 mm.

The ring protecting the sight was present, and the armour of the upper mantlet front was further increased with a thicker additional armour plate.

The 37-mm was aimed through the M2 periscope, though this was mounted in the mantlet to the side of the gun.

The gun mantlet was thick.

To fit the Sherman mantlet required cutting away the front of the Churchill turret before it was welded in place, then the mantlet slot had to be cut away to give sufficient elevation.

Antennae were missing, lights and periscopes were heavily sandblasted, the cloth mantlet cover was incinerated, and the armoured side plates had been blown off and carried up to from the tank.

Early production vehicles had a " semi-internal " cast gun mantlet, which was quickly replaced in production by a better protected big cast mantlet with three vertical slits — for the main gun, for a coaxial Besa machine gun and for the sighting telescope.

Design work for a new turret started in March 1941 but Nuffield was not involved until late in the year when they adapted the existing turret with a new mantlet and hatch.

The turret carried the main armament with the machine gun to the right in a rotating internal mantlet.

* SU-85-IV-Second prototype also with a standard hull of the SU-122 but it had a larger ball mantlet, different from the one used in SU-85-I.

* SU-85-II-Third SU-85 prototype with the new 85 mm D-5S gun, a new TSh-15 sight and a new ball mantlet design.

: Churchill IV with upgraded weaponry under ' Operation Whitehot ' using the gun and mantlet from a destroyed or scrapped Sherman, fitted to a Churchill IV cast turret.

Several other improvements were made: armour protection was increased, the hull and turret were welded with a cast gun mantlet, ammunition was stored in armoured bins, the suspension was strengthened, return rollers were added and the turret was electrically traversed ( a design feature taken from the Churchill tank ), with a generator powered by the main engine rather than the hydraulic system of the Cromwell.

Two main variants can be distinguished, the earlier ( 1944 model ) G1 with a small internally bolted main gun mantlet and a modified Panther A engine deck, and the later ( 1945 model ) G2 with a larger simplified, outside-bolted mantlet and a modified Panther G engine deck, though late G1s also had the larger mantlet.

If facing a Panther, a Hellcat would be facing a tank with roughly 140mm of line-of-sight armor frontally that could not be pierced at any range, with a 100mm mantlet that could be pierced at suicidally close range.

** Magach 7A ( 7 Alef ): Fixed flat mantlet with gun " slots ".

** Magach 7C ( 7 Gimel ): Fixed angled mantlet with gun " slots ".

As a result, the glacis plate is generally the thickest, most robust armored section of a tank, followed by the turret face and mantlet.

The first penetrated the turret through the machine gun port in the mantlet killing both the gunner and the loader.

Mounted on the mantlet is the 9S428 ATGM launcher capable of firing 9M14 Malyutka ( NATO: AT-3A Sagger A ) and 9M14M Malyutka-M ( NATO: AT-3B Sagger B ) ATGMs ( for which the vehicle carries 2 ATGMs in the turret ).

The thickest armor used was 33 mm on the gun mantlet and 26 mm on the turret sides.

The turret has angled sides and angled mantlet.

In the front of the " turret " a small gun mantlet was present, that normally lacked any armament but in an emergency situation could be fitted with the portable FM 24-29 machine-gun that was part of the crew equipment.

To save weight several innovative technologies would be applied: the use of light alloys ; replacing the original chassis and turret using riveted armour plates with a cast hull and welded dome-shaped turret ; the use of sloped armour and finally the use of the turret configuration already in development for the Char G1, featuring a gun mount on the bottom of the tank, obviating the need to install a heavy gun mantlet.

The mantlet was internal with a large opening in the front of the turret for the gun barrel, the coaxial Besa machine gun and the aperture of the No. 39 telescopic sight.

Some of the ISU-152Ks received an additional 15 mm armour plate welded on top of the 60 mm armour plate covering the mantlet above.

Also, some of them received an additional armour plate welded on the upper mantlet front.

The gun mantlet was redesigned to accept the new armour.

The Firefly had no armour or mobility advantages over the normal Sherman tank, although the gun mantlet was some 13mm thicker.

To enable the crew to fire effectively at night, a low light level television ( LLLTV ) camera, which moved in elevation with the main gun, was fitted to the mantlet.

** Model 1940 ( German designation: KV-1A ) – Used the F-32 76 mm gun and a new mantlet.

Turret and mantlet remained from conventional KV-1S.

His tank fired twice, damaging the Tiger's gun mantlet ; it drew back slightly and then raced past the side street before Bramall could respond.

D ; this variant, of which 248 vehicles were produced, reintroduced the hull machine gun and changed the turret's internal gun mantlet to an external one.

An 88mm round penetrated the gun mantlet.

Photographs of this knocked out Tiger I in Hunnicutt's book showed a penetration through the front gun mantlet.

The ISU-122S variant is recognizable by its ball-shaped gun mantlet and double-baffle muzzle brake.

The mantlet had additional armor ring protecting the sight.