Weapons · Light machine gun · in the sim

HALCYON LMG

faction rifle damage and ramp; rps ×0.9; 100 mag; 5.5 s; spread ×1.5 (class.rs keeps the 100-round box)
PMC
HALCYON
class
Support (class.rs)
unlock
free (Support preset)
source
class.rs weapon(Support)

Our numbers

damage ramp
20 → 15 per hit, full to 30 m, linear to 180 m, stops at 286 m
rate of fire
10.8 rounds/s (648 rpm)
magazine
100 + 200 spare on spawn
reload
–
muzzle velocity
900 m/s
bullet drop
6.1 cm at 100 m, 24.2 cm at 200 m (g = 9.81 m/s²)
spread
6 mrad hip, standing; 1.8 mrad aimed (ADS ×0.3); moving ×0.9
recoil
5.2 mrad up, 3.36 mrad side per shot; first shot ×1.2; recovers 6.4/s; ADS recoil ×0.65
bloom
+0.18× base per shot, up to 2.2× base, recovers 1× base/s

Damage over distance

0510152025303540050100150200250distance, mdamage per hit
OpenMAG HALCYON LMGwith every LMG skillBF4 m249 (reference)BF4 m240 (reference)

Bullets to kill

Body hits, against each PMC's armour multiplier (weapon.rs FactionProfile) and both armour weights (progression.txt).

targetclose ≤ 30 mfar ≥ 180 mhead ×2, closeideal TTK close
HALCYON light (100 HP, ×1.15 damage taken)5630.37 s
HALCYON heavy (130 HP, ×1.15 damage taken)6830.46 s
VRG light (100 HP, ×0.85 damage taken)6830.46 s
VRG heavy (130 HP, ×0.85 damage taken)81140.65 s
MERIDIAN light (100 HP, ×1 damage taken)5730.37 s
MERIDIAN heavy (130 HP, ×1 damage taken)7940.56 s

With skills

Every LMG skill (LMG bipod grip (1 pt), 150-round box (2 pts), LMG Mk II (5 pts)) gives: 21.6 → 16.2 @ 30 → 180 m, 11.66 rounds/s, 150 rounds, – s reload, spread 5.1 mrad.

Design note

DESIGN.md §20.3, row "LMG"

OpenMAG (design)
faction rifle damage and ramp; rps ×0.9; 100 mag; 5.5 s; spread ×1.5 (class.rs keeps the 100-round box)
BF4 reference
m249 800 rpm, 200/2, 6.2 s, 620 m/s, 24.5→18 @8→65 m; m240 650 rpm, 100 mag, 33→21.6 (m249, m240)

BF4 reference

Observed numbers from the clean-room tables (weapons.json), cited so the tuning is traceable. Not used in the game.

assetclassfireRoF rpmmag/magsreload sv0 m/sdamagegravityblastlock time/cone/range
m249
gameplay/weapons/m249/m249
LmgAutomaticFire800200/26.262024.5→18 @ 8→65 m-15
m240
gameplay/weapons/m240/m240
LmgAutomaticFire650100/36.261033→21.6 @ 8→65 m-15
last built 2026-10-26 from 2dba433 · generated by tools/wiki-build.mjs · BF4 numbers are observed reference values read into clean-room notes; no BF4 code, data file or asset is on this site · OpenMAG values are proposed until playtests confirm them · OpenMAG home