Best OSA Loadout in Infinite Warfare
30. Oktober 2026 · Aktualisiert 10. November 2026 · 2 Min. Lesezeit
Original-game build
Original-game guide from the October 2026 editorial snapshot. Accessible sources confirm the attachment names; this is not a claim of a majority consensus or current Warzone compatibility.
Source check: 2026-11-10 · 1 independent source families
One source family supports this setup; a wider consensus is not established.
- Optic
- Reflex or ELO
- Attachment
- Foregrip
- Attachment
- Quickdraw
- Magazine
- Extended Magazine
- Lethal
- None
- Tactical
- Personal Radar
- Perks
- Ghost, Scavenger, Dead Silence
Auf dieser Seite
Source review — 10 November 2026: This is an original-game loadout from the dated guide below. Accessible source pages confirm the listed weapon attachment names. Perks and equipment retain their original dated attribution; the source review does not imply hands-on testing or a fresh balance-patch analysis.
The OSA is a classic fully automatic ballistic rifle with an integrated grenade launcher, and Charlie INTEL's January 2017 report lists it as restricted in league play. KeenGamer calls its damage and fire rate "insane" but warns about strong recoil. Our verdict is to run it in Hardcore with a Foregrip. This reflects a guide from 19 June 2017, before the mid-2017 updates.
Best OSA loadout
This Hardcore class comes from KeenGamer only (19 June 2017). No second source lists the same attachments.
| Slot | Pick | What it does |
|---|---|---|
| Optic | Reflex or ELO | Reflex is a red dot and ELO an illuminated optic, per SCUF |
| Attachment | Foregrip | Helps control the recoil; KeenGamer calls it near essential |
| Attachment | Quickdraw | Faster aiming, per SCUF |
| Magazine | Extended Magazine | Adds rounds |
| Lethal | None | KeenGamer leaves this slot empty |
| Tactical | Personal Radar | Stands in for the minimap Hardcore removes |
| Perks | Ghost, Scavenger, Dead Silence | Hidden from regular UAVs, ammo restock, quiet movement |
Why this build works
iTechPost's November 2016 stat listing shows why the class looks this way: Accuracy 42 sits well below Damage 78, Range 80 and Fire Rate 87, with Mobility at 58. Foregrip addresses the recoil, while Extended Magazine and Scavenger answer KeenGamer's warning that ammo runs out quickly.
How to play it
KeenGamer's advice is to learn the recoil well enough to land headshots rather than relying on the fire rate alone. Remember the under-barrel launcher, which KeenGamer describes as single-use. Do not plan on this class for competitive rules: Charlie INTEL's 30 January 2017 report lists the OSA as restricted under the CWL rule set.
Alternative setups
KeenGamer names Gung Ho, Blind Eye and Dexterity as perk alternatives. It says Blind Eye counters enemy auto-targeting killstreaks and that Dexterity speeds reloads.
Unlock notes
Reach level 55, then trade a Prestige for a Classic Weapon token and spend it on the OSA, according to iTechPost. The trade cannot be undone. KeenGamer notes the OSA has no variants.
Sources
- KeenGamer: Top 5 Classes for Hardcore in Infinite Warfare
- iTechPost: Classic Weapons Guide
- Charlie INTEL: CWL rule set updates for Infinite Warfare
- SCUF: Which Infinite Warfare Rig Should You Use
Checked: 30 October 2026. Reflects a June 2017 guide; the last weapon balance patch found is from August 2017.