If you want to get plenty of kills and win matches in the MW3 Beta, you’ll need to use one of the best guns and the meta loadout for each of these weapons too!
Call of Duty is all about the guns, and, of course, Modern Warfare 3 is no different. However, with so many weapons to choose from in MW3 Beta, it’s hard to pick which ones to use.
That’s why we’ve got a list of the most powerful guns for the Beta, as well as the meta weapon builds for each of them. Give these best MW3 Beta loadouts a try – they’re bound to help you dominate lobbies!
Top 5 Best Guns for Modern Warfare 3 Beta Loadouts
The top 5 best guns to use in the MW3 beta are:
Each of these weapons is very powerful in the MW3 beta. However, you’ll need to equip powerful attachments to them to maximize their effectiveness in combat!
Below, we have the best loadout for each of these guns so you can dominate matches!
Meta BAS-B Loadout
| Attachment | How to Unlock |
| Wyvern’s Respite Long Barrel (Barrel) | BAS-B Level 14 |
| MK. 23 Reflector (Optic) | MTZ-556 Level 2 |
| FSS Ravager-45 Stock (Stock) | BAS-B Level 3 |
| 30 Round Mag (Magazine) | BAS-B Level 4 |
| D37 Grip (Rear Grip) | BAS-B Level 6 |
The BAS-B is the best battle rifle in the MW3 Beta, and this loadout for it significantly decreases its recoil.
Despite its lower fire rate, it can kill very quickly at long range, making it a perfect gun for the War game mode.
Meta MTZ-556 Loadout
| Attachment | How to Unlock |
| Casus Brake (Muzzle) | KV Inhibitor Level 5 |
| MTZ Clinch Pro Barrel (Barrel) | MTZ-556 Level 4 |
| MK. 23 Reflector (Optic) | MTZ-556 Level 2 |
| Chewk Angled Grip (Underbarrel) | Longbow Level 11 |
| MTZ Dauntless Grip (Rear Grip) | MTZ-556 Level 5 |
The MTZ-556 is an easy-to-use assault rifle that is very capable at all ranges. This versatility makes it very powerful in the MW3 Beta!
Meta Striker Loadout
| Attachment | How to Unlock |
| Striker Recon Long Barrel (Barrel) | Striker Level 9 |
| MK. 23 Reflector (Optic) | MTZ-556 Level 2 |
| Lachmann MK2 Light Stock (Stock) | Striker Level 10 |
| Chewk Angled Grip (Underbarrel) | Longbow Level 11 |
| Sakin ZX Grip (Rear Grip) | Striker Level 20 |
The Striker is a very powerful SMG that balances a fast time-to-kill with low recoil. This makes it very reliable and easy to use!
Meta MCW Loadout
| Attachment | How to Unlock |
| VT-7 Spiritfire Suppressor (Muzzle) | Striker Level 11 |
| Second Line Mammoth Heavy Barrel (Barrel) | MCW Level 18 |
| MK. 23 Reflector (Optic) | MTZ-556 Level 2 |
| 40 Round Mag (Magazine) | MCW Level 6 |
| RB Talon-X3 Grip (Rear Grip) | MCW Level 3 |
Long-time Call of Duty fans will recognize the MCW as the fan-favorite ACR.
Luckily, just like the ACR of the past, the MCW has a fast fire rate and very low recoil, especially with this loadout build, making it the best long-range weapon in the MW3 beta!
Meta Rival-9 Loadout
| Attachment | How to Unlock |
| Monolitic Suppressor (Muzzle) | Rival-9 Level 7 |
| Rival 38-E Fire Starter Barrel (Barrel) | Rival-9 Level 16 |
| Sapphire-12 Laser (Laser) | Rival-9 Level 8 |
| XRK Edge BW-4 Handstop (Underbarrel) | Rival-9 Level 9 |
| Rival Vice Assault Grip (Rear Grip) | MTZ-762 Level 6 |
The Rival-9 absolutely dominates close-range gunfights and suits a very aggressive playstyle. However, it is not as versatile as other SMGs like the Striker, as its range is limited.
