L21A1 AEP
Definition
UK Police Attenuating Energy Projectile; 37mm polyurethane baton round used by PSNI and other UK forces; designed for lower-body impact at 20-40 metres; carries manufacturer code and lot number visible on projectile body.
- Type
- Attenuating Energy Projectile (less-lethal baton round)
- Caliber
- 37mm
- Material
- Polyurethane
- Users
- PSNI and other UK forces
- Intended range
- 20-40 metres, lower-body impact
Common questions
Why does the manufacturer code and lot number on an L21A1 matter forensically?+
They let investigators trace a fired or recovered round back to its manufacturing batch and issuing force, which supports reconstructing which unit deployed a round in a use-of-force review.
What forensic issues arise when an L21A1 causes injury above the intended lower-body target?+
Reconstruction focuses on firing distance, angle, and trajectory to assess whether the round struck an unintended area due to deflection, movement, or operator error rather than the round performing as designed.
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