Mk4 Mod 0 - Revision history

Skizmophonic at 07:55, 24 February 2026

2026-02-24T07:55:42Z

← Older revision		Revision as of 07:55, 24 February 2026
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	<gallery mode="packed" heights="400px">		<gallery mode="packed" heights="400px">
	File:Mk4 01.jpg\|Mk 4 Mod 0 (SEAL-modified M16A1).		File:Mk4 01.jpg\|Mk 4 Mod 0 (SEAL-modified M16A1).
	File:Ifro1jzyxmfa1.jpg\|~~Mk 4 Mod 0 (example image)~~.		File:Ifro1jzyxmfa1.jpg\|.
	File:Mk4 02.jpg\|~~Mk 4 Mod 0 (example image)~~.		File:Mk4 02.jpg\|.
	</gallery>		</gallery>
	</div>		</div>

Skizmophonic at 07:54, 24 February 2026

2026-02-24T07:54:45Z

← Older revision		Revision as of 07:54, 24 February 2026
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	<hr>		<hr>
	The Mk4 Mod0 was a variant of the [[M16]] rifle that was modified for use by Navy SEALs in Vietnam. The rifles had a corrosion resistant coating inside and out, in addition to O rings in the buffer tube and drain holes in the weapon to let water drain.
	~~=HISTORY=~~
	Navy SEALs used their own specialized variant of the M16A1 Assault Rifle, the Mk4 Mod 0. Like the [[Stoner 63]], the M16 was designed by Eugene Stoner and, unlike the Stoner 63, became one of the most widely produced firearms in world history. After extensive testing and debate in the 1950s and early 1960s, the Air Force and Army officially adopted the M16 as a jungle warfare weapon. Using the [[5.56mm]] NATO round, the M16 was an impressive and innovative lightweight weapon capable of accurately delivering high velocity rounds at a relatively high rate of fire.

	The Mk 4 Mod 0 ~~was~~ optimized for ~~the~~ amphibious ~~and maritime~~ operations of the ~~SEALs~~. ~~Most of the operating components of the weapon were coated in Kal~~-~~Gard~~ and ~~a small quarter inch hole was drilled in the buffer assembly to allow~~ water drainage out of the weapon’s stock. This allowed the Mk 4 Mod 0 to survive depths of approximately 200 feet of water. The weapon also mounted a Mk 2 Mod blast suppressor as a standard component of the firearm. Based on the HEL (Human Engineering Lab) Mk4 suppressor, the Mk 2 Mod 0 suppressor, in addition to ~~dampening~~ the ~~weapon’s noise~~, ~~drained water faster than other suppressors while still allowing automatic and semi~~-~~automatic fire. These modifications armed SEALs with~~ a ~~powerful and specialized standard firearm in which to conduct their covert missions~~.		'''The Mk 4 Mod 0''' is a Navy SEAL–modified variant of the [[M16A1]] optimized for maritime and amphibious operations during the Vietnam War. It is best known for corrosion-resistant internal/external treatments and water-drain features intended to keep the rifle functional after submersion, along with SEAL-oriented accessories such as a blast suppressor.
	~~<br>[https://hamptonroadsnavalmuseum.blogspot.com/2020/01/the-right-tools-for-job-seal-firearms.html SOURCE]~~
	~~<hr>~~		==HISTORY==

			Navy SEAL teams in Vietnam employed specialized small arms tailored to coastal, riverine, and amphibious missions. One such weapon was the Mk 4 Mod 0, a modified M16A1 pattern configured to better tolerate repeated exposure to saltwater, mud, and full submersion—conditions common to SEAL operations. The modifications described in period/historical writeups emphasize corrosion protection and practical “wet gun” reliability improvements, addressing problems that could otherwise stop a rifle after exiting the water.

	~~<gallery mode="packed" heights="400px">~~		Accounts describing the Mk 4 Mod 0 note that key operating components were treated with corrosion-resistant coatings (including Kal-Gard) and that drainage provisions were added (such as a small hole in the buffer assembly and drain paths) to help clear water from the stock/receiver area. Sources also describe SEAL use of a blast suppressor (often referenced as a Mk 2 Mod 0 suppressor) intended to reduce signature and improve water drainage compared to other devices, while still permitting semi-automatic and automatic fire—supporting the SEAL need for a compact, reliable rifle during covert maritime missions.
	~~File:Mk4 01~~.~~jpg~~
	~~File:Ifro1jzyxmfa1~~.~~jpg~~
	~~File:Mk4 02.jpg~~
	~~</gallery>~~

			===Sources===
			* https://hamptonroadsnavalmuseum.blogspot.com/2020/01/the-right-tools-for-job-seal-firearms.html “The Right Tools for the Job: SEAL Firearms in Vietnam” \| Hampton Roads Naval Museum (blog)

	<hr>		<hr>

			<div class="mw-collapsible" style="border:1px solid #ccc; padding:5px; width:100%;">
			<div style="text-align:center; font-weight:bold;">Real-Life Photos</div>
			<div class="mw-collapsible-content" style="margin-top:0.5em;">
			<gallery mode="packed" heights="400px">
			File:Mk4 01.jpg\|Mk 4 Mod 0 (SEAL-modified M16A1).
			File:Ifro1jzyxmfa1.jpg\|Mk 4 Mod 0 (example image).
			File:Mk4 02.jpg\|Mk 4 Mod 0 (example image).
			</gallery>
			</div>
			</div>

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Skizmophonic at 07:54, 24 February 2026

2026-02-24T07:54:01Z

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Skizmophonic at 02:19, 14 September 2025

2025-09-14T02:19:18Z

← Older revision		Revision as of 02:19, 14 September 2025
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	! rowspan=2 \| [[Ammo]]		! rowspan=2 \| [[Ammo]]
	\|-		\|-
	\|[[File:Flag_us_new.png\|50px]]<br><strong>[[US]]</strong>\|\| [[File:MK4MOD0.png\|500px]]<br><b>[[Mk4 Mod 0]]</b> \|\| [[File:Weapon mk4mod0.svg\|500px]] \|\| [[File:Class_Assault.png\|50px]] <b>[[Assault]]<br> \|\| 20[[+1]] / 60		\|[[File:Flag_us_new.png\|50px]]<br><strong>[[US]]</strong>\|\| [[File:MK4MOD0.png\|500px]]<br><b>[[Mk4 Mod 0]]</b> \|\| [[File:Weapon mk4mod0.svg\|500px]] \|\| [[File:Class_Assault.png\|50px]] <b>[[Assault]]<br> \|\| 20[[+1]] / 80
	\|-		\|-
	\|}		\|}

Skizmophonic at 07:08, 5 November 2024

2024-11-05T07:08:44Z

← Older revision		Revision as of 07:08, 5 November 2024
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			[[Category:Weapons]]
			[[Category:Weapons of Vietnam]]
	{\| class="wikitable sortable" style="margin:auto;text-align: center;width:90%"		{\| class="wikitable sortable" style="margin:auto;text-align: center;width:90%"
	\|-		\|-

Skizmophonic at 18:55, 2 November 2024

2024-11-02T18:55:28Z

← Older revision		Revision as of 18:55, 2 November 2024
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	! rolspan=2 \| [[Weight]]		! rolspan=2 \| [[Weight]]
	\|-		\|-
	\|[[Mk4 Mod 0]]\|\|[[Assault Rifle]]\|\|Auto+Semi\|\|750 RPM\|\|7.02° & 1° [[ADS]]\|\|0.950\|\|960 m/s\|\|12.3 g (189.81 gr)\|\|3.89 kg (8.57 lbs)		\|[[Mk4 Mod 0]]\|\|[[Suppressed]]<br>[[Assault Rifle]]\|\|Auto+Semi\|\|750 RPM\|\|7.02° & 1° [[ADS]]\|\|0.950\|\|960 m/s\|\|12.3 g (189.81 gr)\|\|3.89 kg (8.57 lbs)
	\|-		\|-
	\|}		\|}

Skizmophonic at 01:37, 23 October 2024

2024-10-23T01:37:40Z

← Older revision		Revision as of 01:37, 23 October 2024
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	The Mk4 Mod0 was a variant of the [[M16]] rifle that was modified for use by Navy SEALs in Vietnam. The rifles had a corrosion resistant coating inside and out, in addition to O rings in the buffer tube and drain holes in the weapon to let water drain.		The Mk4 Mod0 was a variant of the [[M16]] rifle that was modified for use by Navy SEALs in Vietnam. The rifles had a corrosion resistant coating inside and out, in addition to O rings in the buffer tube and drain holes in the weapon to let water drain.
	=HISTORY=		=HISTORY=
	Navy SEALs used their own specialized variant of the M16A1 Assault Rifle, the Mk4 Mod 0. Like the [[Stoner 63]], the M16 was designed by Eugene Stoner and, unlike the Stoner 63, became one of the most widely produced firearms in world history. After extensive testing and debate in the 1950s and early 1960s, the Air Force and Army officially adopted the M16 as a jungle warfare weapon. Using the 5.56 NATO round, the M16 was an impressive and innovative lightweight weapon capable of accurately delivering high velocity rounds at a relatively high rate of fire.		Navy SEALs used their own specialized variant of the M16A1 Assault Rifle, the Mk4 Mod 0. Like the [[Stoner 63]], the M16 was designed by Eugene Stoner and, unlike the Stoner 63, became one of the most widely produced firearms in world history. After extensive testing and debate in the 1950s and early 1960s, the Air Force and Army officially adopted the M16 as a jungle warfare weapon. Using the [[5.56mm]] NATO round, the M16 was an impressive and innovative lightweight weapon capable of accurately delivering high velocity rounds at a relatively high rate of fire.

	The Mk 4 Mod 0 was optimized for the amphibious and maritime operations of the SEALs. Most of the operating components of the weapon were coated in Kal-Gard and a small quarter inch hole was drilled in the buffer assembly to allow water drainage out of the weapon’s stock. This allowed the Mk 4 Mod 0 to survive depths of approximately 200 feet of water. The weapon also mounted a Mk 2 Mod blast suppressor as a standard component of the firearm. Based on the HEL (Human Engineering Lab) Mk4 suppressor, the Mk 2 Mod 0 suppressor, in addition to dampening the weapon’s noise, drained water faster than other suppressors while still allowing automatic and semi-automatic fire. These modifications armed SEALs with a powerful and specialized standard firearm in which to conduct their covert missions.		The Mk 4 Mod 0 was optimized for the amphibious and maritime operations of the SEALs. Most of the operating components of the weapon were coated in Kal-Gard and a small quarter inch hole was drilled in the buffer assembly to allow water drainage out of the weapon’s stock. This allowed the Mk 4 Mod 0 to survive depths of approximately 200 feet of water. The weapon also mounted a Mk 2 Mod blast suppressor as a standard component of the firearm. Based on the HEL (Human Engineering Lab) Mk4 suppressor, the Mk 2 Mod 0 suppressor, in addition to dampening the weapon’s noise, drained water faster than other suppressors while still allowing automatic and semi-automatic fire. These modifications armed SEALs with a powerful and specialized standard firearm in which to conduct their covert missions.

Skizmophonic at 01:30, 23 October 2024

2024-10-23T01:30:27Z

← Older revision		Revision as of 01:30, 23 October 2024
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	! rowspan=2 \| [[Weapon Script Name]]		! rowspan=2 \| [[Weapon Script Name]]
	\|-		\|-
	\|FN\|\|5.56mm\|\|[[USA]]\|\|1967?\|\|Colt\|\|20 in (508 mm)<br>+[[Suppressor]]\|\| in ( mm)\|\|weapon_mk4mod0		\|FN\|\|[[5.56mm]]\|\|[[USA]]\|\|1967?\|\|Colt\|\|20 in (508 mm)<br>+[[Suppressor]]\|\| in ( mm)\|\|weapon_mk4mod0
	\|-		\|-
	\|}		\|}

Skizmophonic at 01:22, 12 October 2024

2024-10-12T01:22:14Z

← Older revision		Revision as of 01:22, 12 October 2024
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	! rowspan=2 \| [[Ammo]]		! rowspan=2 \| [[Ammo]]
	\|-		\|-
	\|[[File:Flag_us_new.png\|50px]]<br><strong>[[US]]</strong>\|\| [[File:MK4MOD0.png\|500px]]<br><b>[[Mk4 Mod 0]]</b> \|\| [[File:Weapon mk4mod0.svg\|500px]] \|\| [[File:Class_Assault.png\|50px]] <b>[[Assault]]<br> \|\| 20 / 60		\|[[File:Flag_us_new.png\|50px]]<br><strong>[[US]]</strong>\|\| [[File:MK4MOD0.png\|500px]]<br><b>[[Mk4 Mod 0]]</b> \|\| [[File:Weapon mk4mod0.svg\|500px]] \|\| [[File:Class_Assault.png\|50px]] <b>[[Assault]]<br> \|\| 20[[+1]] / 60
	\|-		\|-
	\|}		\|}

Skizmophonic at 06:49, 10 October 2024

2024-10-10T06:49:47Z

← Older revision		Revision as of 06:49, 10 October 2024
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	! Partial!! Empty		! Partial!! Empty
	\|-		\|-
	\| 35 \|\|×2.5 = 87.5\|\|×1.2 = 42\|\|×1.15 = 40.25\|\|×0.8 = 28\|\|×0.75 = 26.25\|\|NO\|\|NO\|\| Seconds\|\| Seconds		\| 35 \|\|×2.5 = 87.5\|\|×1.2 = 42\|\|×1.15 = 40.25\|\|×0.8 = 28\|\|×0.75 = 26.25\|\|NO\|\|NO\|\|2.366 Seconds\|\|3.166 Seconds
	\|-		\|-
	\|}		\|}