Magpul B.A.D. Lever AR15/M4

Magpul B.A.D. Lever (Battery Assist Device) is a bolt catch extension for AR-15/M4 rifles. It lets you release and lock the bolt with the trigger finger from the ready position without entering the trigger guard.

It installs with the included Torx wrench and requires no permanent modification; standard bolt release techniques still work. The ridged paddle gives positive purchase, and the contour also allows left-handed use.

Machined from 6061-T6 aluminum with MIL-A-8625F Type III Class 2 hard anodizing. The mounting screw has a thread-locking patch to prevent back-out under recoil.

Magpul B.A.D. Lever AR15/M4 - Features:

• Product type: bolt catch extension
• Compatibility: Mil-Spec AR-15/M4 uppers and lowers
• Material: 6061-T6 aluminum, Type III hard anodized
• Installation: Torx screw, wrench included, no permanent modification
• Handedness: also usable left-handed
• Colour: black
• Made in: USA

Faster bolt manipulation from the firing position without modifying the rifle.

Product text updated 24.09.2026.