Spring-Loaded Chamber — warframe

Spring-Loaded Chamber is an uncommon Assault Rifle mod that increases fire rate while aiming for a brief time upon reloading.

Stats

Rank	Fire rate	Duration	Cost
0	+12.5%	1.5s	2
1	+25%	3s	3
2	+37.5%	4.5s	4
3	+50%	6s	5
4	+62.5%	7.5s	6
5	+75%	9s	7

Mission Type	Source	Rotations or Drop Table	Chance^[1]	Quantity^[2]	Avg. per roll^[3]	Star Chart Nodes
Necralisk Bounty	Necralisk Bounty Lvl 15-25 Stage 2	C	10.29%	1	0.1029	Cambion Drift/Necralisk, Deimos; talk to Mother
Necralisk Bounty	Necralisk Bounty Lvl 15-25 Final Stage	C	14%	1	0.14	Cambion Drift/Necralisk, Deimos; talk to Mother

Enemy	Drop Table Chance^[4]	Item Chance^[5]	Chance^[6]	Expected Kills^[7]	Quantity^[8]	Avg. per roll attempt^[9]

If activated, Spring-Loaded Chamber will display an icon timer beside the player's health UI, and the Warframe will be briefly surrounded by a flashing energy ribbon.
The Fire Rate bonus is granted upon the end of the reload animation.
Can be applied to Battery Weapons but will have no effect.

When the mod is equipped on at least one primary weapon, changing primary weapons will cause the mod's flash effect to go off while in the arsenal.

Spring-Loaded Chamber On Some Weapons

Update 29.0 (2020-08-25)

Last updated: Hotfix 24.1.5 (2018-12-13)

↑ Chance to roll item within drop table
↑ Amount rewarded on successful roll
↑ (Quantity × Chance)
↑ Chance to roll drop table
↑ Chance to roll item within drop table
↑ (Drop Table Chance × Item Chance)
↑ (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
↑ Amount rewarded on successful roll
↑ (Quantity × Chance), average item quantity on a roll attempt (successful or not)

	Fire Rate Mods
Rifle	Speed Trigger • Shred ( Primed) • Vile Acceleration • Spring-Loaded Chamber • Vigilante Fervor
Shotgun	Shotgun Barrage ( Amalgam) • Accelerated Blast • Frail Momentum • Repeater Clip
Pistol	Accelerated Isotope • Gunslinger • Lethal Torrent • Anemic Agility • Pressurized Magazine
Archgun	Automatic Trigger • Archgun Ace