Best FR 5.56 Loadout for Modern Warfare 3: Class setup, Attachments, Perks

The FR 5.56 is a burst Assault Rifle in Modern Warfare 3 that is effective in medium and long-range combat. Here is a detailed loadout guide for the FR 5.56 including its class setup, attachment, and perks.
Assault Rifles have been the most dominant weapon archetype ever since the release of Modern Warfare 3. Even though the class has primarily been dominated by the Holger 556 and the MCW, there is one Assault Rifle in the game that definitely deserves more praise than it has received so far.
The FR 5.56 is exceptionally powerful as long as you are fighting in medium to long ranges. It can shut down enemies in just one burst if you are able to hit the head. In fact, if you are fighting in the optimal range, the FR 5.56 can outclass the MCW or the Holger 556.
Therefore, if you are interested in using this weapon, we have got you covered.
Contents
- Best FR 5.56 MW3 loadout
- FR 5.56 MW3 loadout: Perks & Equipment
- How to unlock the FR 5.56 in Modern Warfare 3
- Best FR 5.56 alternative

Best FR 5.56 MW3 loadout
- Muzzle: RF Crown 50
- Barrel: 435mm FR435
- Rear Grip: SA Ion
- Ammunition: 5.56 High Velocity
- Laser: Schlager Peq Box IV
The FR 5.56’s iron sight is great so you may or may not opt for an optic on this AR. The RF Crown 50 and 435mm FR435 are the ideal choices as muzzle and barrel as it optimizes the recoil, mobility, and damage of the gun.
You can go with the SA Ion rear grip as it helps increase the stability of the AR. 5.56 High-Velocity ammo will ensure the bullets break enemies’s skulls at the highest velocity and lastly, the Schlager Peq Box IV laser improves hipfire accuracy.
FR 5.56 MW3 loadout: Perks & Equipment
- Vest: Infantry
- Gloves: Scavenger
- Boots: Covert
- Gear: EOD Padding
- Lethal: Frag Grenade
- Tactical: EMD Grenade
- Field Equipment: Trophy System
Infantry vest is ideal when you’re running an AR as increases Tactical Sprint and reduces refresh time. For gloves, you can choose Scavenger as it resupplies ammo from dead players. Covert boots will make your footsteps silent and EOD Padding reduces damage from non-killstreak explosives and fire.
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The EMD Grenade upon hitting an enemy, applies a tracking device which reveals their position on the minimap. Trophy System blocks enemies’ throwables while Frag Grenades will keep them at bay.
How to unlock the FR 5.56 in Modern Warfare 3
To unlock the FR 5.56 in Modern Warfare 3, you’ll need to unlock it through the Armory. Once you hit level 25, you’ll be able to assign and complete Daily Challenges to unlock it.
Best FR 5.56 alternative in Modern Warfare 3
If burst weapons are not your forte, then the SVA 545 could be the right alternative for you in MW3. It packs that raw firepower and provides better mobility without compromising on damage.
That’s all for our FR 5.56 loadout in Modern Warfare 3. For more MW3 coverage, check out these guides below:
Best Modern Warfare 3 AR class loadouts | How to slide cancel in Modern Warfare 3 | Best controller settings in Modern Warfare 3 | All maps & modes | How to play Modern Warfare 3 at 120 FPS on PS5 | Modern Warfare 3 TTK | How long is the Modern Warfare 3 campaign? | Campaign mission list | How to fix packet burst | How to play MW3 Zombies in first person