Meganeura is a trait in Destiny 2 that can appear on 37 weapons. An enhanced version exists on crafted and some newer weapons.
What Meganeura does
Precision final blows create an elemental damage explosion that deals more damage based on the number of rapid precision hits dealt beforehand.
Enhanced version
Precision final blows create an elemental damage explosion that deals more damage based on the number of precision hits dealt beforehand.
Weapons that can roll Meganeura (37)
Bane of SorrowVoid · Machine Gun
BonechillerVoid · Shotgun
Chain of CommandStasis · Machine Gun
Dawn Far OffSolar · Machine Gun
DECATUR 02Stasis · Auto Rifle
DIABLERETS 06Strand · Machine Gun
Doom of ChelchisVoid · Scout Rifle
Doom of Chelchis (Harrowed)Void · Scout Rifle
Epochal IntegrationSolar · Hand Cannon
EyaslunaStasis · Hand Cannon
Fang of Ir YûtStrand · Scout Rifle
Fang of Ir Yût (Adept)Strand · Scout Rifle
Hailing ConfusionStasis · Pulse Rifle
High TyrantVoid · Pulse Rifle
King OrfeoArc · Combat Bow
Nessa's OblationVoid · Shotgun
Nessa's Oblation (Adept)Void · Shotgun
New PurposeStasis · Pulse Rifle
No FeelingsArc · Scout Rifle
Non-DenouementArc · Combat Bow
Non-Denouement (Adept)Arc · Combat Bow
NullifySolar · Pulse Rifle
Nullify (Adept)Solar · Pulse Rifle
Oxygen SR3Solar · Scout Rifle
Qua Vinctus IVStrand · Machine Gun
Rapid GrowthArc · Sniper Rifle
Seventh Seraph SAWArc · Machine Gun
Seventh Seraph SI-2Void · Sidearm
Sixth SenseStrand · Hand Cannon
Temporal ClauseSolar · Machine Gun
Thermal ErosionSolar · Machine Gun
TrusteeSolar · Scout Rifle
Vengeful WhisperStrand · Combat Bow
Voltaic ShadeArc · Scout Rifle
Waking VigilArc · Hand Cannon
Zaouli's BaneSolar · Hand Cannon
Zaouli's Bane (Harrowed)Solar · Hand Cannon