Weapons & Equipment Guide for METAL GEAR SOLID: MASTER COLLECTION Vol.2

Metal Gear Solid: Master Collection Vol.2 brings together the arsenals of two distinct eras of tactical espionage — the futuristic, ID-locked battlefields of MGS4: Guns of the Patriots and the Cold War-era weapon development system of MGS: Peace Walker — offering players hundreds of weapons, gadgets, and items to master across both titles.

MGS4: Guns of the Patriots — Drebin's Shop & Weapon Acquisition

In MGS4, virtually every firearm on the battlefield is locked by the SOP (Sons of the Patriots) ID-recognition system. Weapons picked up from fallen PMC soldiers or militia fighters cannot be used until they are laundered through Drebin, an arms dealer accessible via the pause menu at any time during gameplay. Drebin unlocks weapons in exchange for Drebin Points (DP), which are earned by collecting duplicate weapons, selling surplus firearms, and progressing through the story. Savvy players should note that Drebin offers discounts on Wednesdays and Sundays (based on the system clock), and prices drop dramatically during the final act of the game.

MGS4 features an enormous catalog spanning handguns, assault rifles, submachine guns, shotguns, sniper rifles, machine guns, rocket and missile launchers, grenade launchers, and throwable ordnance. Key early-game staples include the Operator (a customizable M1911-pattern pistol), the M4 Custom assault rifle with its extensive rail attachment options, and the Mk. 2 — a suppressed tranquilizer pistol essential for non-lethal playthroughs. For long-range engagements, players can rely on the SVD or the DSR-1, while the classic Mosin-Nagant returns as a non-lethal sniper option firing tranquilizer rounds.

MGS4: Special Equipment & Unlockable Gear

Beyond standard firearms, Old Snake carries several signature pieces of equipment that define MGS4's gameplay. The OctoCamo suit automatically mimics the texture and color of any surface Snake presses against, functioning as an adaptive camouflage system tied to the Camo Index. The Solid Eye is a multi-purpose head-mounted display that toggles between normal vision with an integrated heads-up display, night vision for dark environments, and binocular mode for long-range reconnaissance. The Metal Gear Mk. II (and later Mk. III) is a small remote-controlled companion robot that can scout ahead, deliver electric shocks to stun enemies, and act as a communications relay.

Several powerful weapons are locked behind specific unlock conditions. The Solar Gun — a non-lethal energy weapon with infinite ammo — is obtained by collecting all five Boss Unit statues (the dolls dropped by defeated Beauty and the Beast members via non-lethal takedowns). The Patriot, an iconic infinite-ammo assault weapon from MGS3, can be unlocked by completing the game under specific conditions. The Thor .45-70 single-action revolver and the Race Gun are among other completion-based rewards. Players pursuing the Big Boss rank emblem should focus on mastering the tranquilizer-based arsenal, as this achievement demands a no-kill, no-alert playthrough.

MGS: Peace Walker — R&D Weapon Development System

Peace Walker takes an entirely different approach to weapon progression by tying it to Mother Base's Research & Development team. Rather than purchasing weapons from a shop, Big Boss builds his arsenal by recruiting soldiers via the Fulton Recovery System and assigning high-stat personnel to the R&D division. Each weapon exists within a branching development tree, and higher-tier arms require not only sufficient GMP (gross military product) but also a minimum R&D team level. Some advanced blueprints additionally demand specific key items recovered from story missions or optional Extra Ops.

The Peace Walker armory covers handguns, assault rifles, submachine guns, shotguns, sniper rifles, rocket and missile launchers, and support items. Foundational weapons include the M16A1 assault rifle, the M1911A1 pistol, and the LAW disposable rocket launcher — all serviceable early options that branch into dramatically more powerful variants. The RPG-7 and its upgrades become critical for vehicle and mech boss encounters, while the M60 machine gun and Carl Gustav recoilless rifle provide heavy suppressive fire. For stealth-oriented players, the Mosin-Nagant tranquilizer sniper rifle and the Mk. 22 pistol remain staples throughout the campaign.

Peace Walker Items, Support Equipment & Co-Op Loadouts

Peace Walker's item system revolves around supply management and loadout preparation before each mission. Players carry rations and other healing provisions such as Curry, Mate, and various food items, each restoring health and sometimes providing temporary stamina benefits. The Fulton Recovery Device is arguably the most important piece of equipment in the game, allowing players to extract enemy soldiers, prisoners, and even vehicles back to Mother Base to bolster staff and resources. Selecting the right support items — including smoke grenades, chaff grenades for disabling electronics, and supply markers for calling in ammunition drops — is essential when tackling tougher assignments.

The HD Collection version of Peace Walker included in Master Collection Vol.2 retains the cooperative multiplayer mission structure, and loadout coordination becomes critical in co-op play. Teams should ensure a balanced composition: at least one player carrying a rocket launcher or heavy ordnance for armored targets, one designated medic with extra healing items and the capability to revive downed partners, and others providing covering fire or fulfilling sniper and stealth roles. Communication and complementary loadouts turn otherwise grueling boss encounters — particularly against the Peace Walker, Pupa, Chrysalis, and Cocoon AI weapons — into manageable tactical operations.

Cross-Game Strategies & Recommended Loadouts

For newcomers to the collection, both games reward patience, reconnaissance, and non-lethal approaches with better rankings and exclusive unlocks. In MGS4, a recommended stealth loadout consists of the Mk. 2 tranquilizer pistol, the Mosin-Nagant for long-range sedation, stun grenades for group encounters, and the Solid Eye set to night vision for indoor sections. Players who prefer a combat-forward approach should invest Drebin Points early into upgrading the M4 Custom with a suppressor, foregrip, and dot sight, supplemented by a shotgun for close-quarters emergencies.

In Peace Walker, prioritize leveling the R&D and Combat teams at Mother Base before tackling difficult Extra Ops or vehicle boss fights. A strong general-purpose loadout for solo play includes an upgraded assault rifle, a rocket launcher for armored encounters, rations, and supply markers. For boss battles against AI weapons, bring the highest-tier rocket launcher available along with resupply beacons, and focus fire on weak points identified through reconnaissance. Across both titles, mastering the CQC (Close Quarters Combat) system remains invaluable — it costs no ammunition, is completely silent, and in Peace Walker it enables high-quality Fulton extractions of stunned soldiers, building the elite army that fuels every other system in the game.