This is a compact, multi-fuel tactical weapon-mounted light optimized for short-barreled rifles (SBRs), carbines, submachine guns, and platforms with limited rail space. Released in early 2026, it delivers high-output performance in a low-profile package while offering flexible switch options via the innovative Jack-Cap® tail cap. The "Pro" variant stands out for its dual-operation redundancy, making it ideal for users who want both push-button simplicity and remote pressure switch capability.
Key Features & Specs
- Light Output (varies by battery):
- With SL-B9® rechargeable Li-Ion battery pack (USB rechargeable, sold separately or in USB Pro variant): High — 850 lumens; Low — 100 lumens; Strobe.
- With CR123A lithium battery (included): High — 500 lumens; Low — 100 lumens; Strobe.
- Beam Performance: High candela for excellent throw and target identification.
- SL-B9: 30,000 candela / 346 m beam distance (High).
- CR123A: 18,000 candela / 268 m beam distance (High).
- Low mode: 3,400 candela / 117 m across both batteries.
- Modes & Programming: TEN-TAP® programmable switch with three user-selectable programs (factory default: High/Strobe; options include High Only or Low/High). Easy one-handed operation.
- Controls: Jack-Cap® tail cap provides operational redundancy — standard push-button tail switch or remote pressure switch port (remote switch included in the kit). This allows momentary/constant-on flexibility without compromising the light if one method fails.
- Mounting: Includes both MIL-STD-1913 (Picatinny) rail mount and M-LOK® kit with hardware and 2.5 mm Allen wrench. One-handed snap-on/tighten interface keeps hands away from the muzzle. Compact design fits tight rails while leaving room for a pressure pad.
- Build Quality: 6000-series machined aircraft aluminum with anodized finish. Gasket-sealed glass lens. Impact-resistant (2 m drop). Waterproof rating: IP67 (with push-button switch, submersible to 1 m for 30 min); IP54 with remote pressure switch installed.
- Power: Multi-fuel — one SL-B9® protected Li-Ion rechargeable battery pack or one CR123A lithium battery (CR123A included). Run times:
- High (CR123A): ~1.75 hours
- Low (CR123A): ~6.5 hours
- Strobe (CR123A): ~2.5 hours
- (Longer on rechargeable in some modes; shorter on High with SL-B9).
- Size & Weight: Length: 4.64 in (11.79 cm). Weight: ~5.5 oz (156 g) with CR123A; ~5.6 oz (159 g) with SL-B9.
- Additional: Limited lifetime warranty. Serialized. Designed for law enforcement, military, home defense, and tactical use where compact size, reliability, and beam reach matter.
The 1L-X Pro excels on short-rail setups where larger lights (like the HL-X series) won't fit comfortably alongside a pressure switch. The Jack-Cap gives users the best of both worlds for activation methods. Early feedback highlights its bright, focused beam, multi-fuel versatility, and rugged Streamlight durability.
Quick Series Comparison
- 89027: Standard tail switch + SL-B9 USB included.
- 89025: Pro (Jack-Cap® + remote switch) + SL-B9 USB included.
- 89026: Standard tail switch + CR123A included.
- 89024 (this model): Pro (Jack-Cap® + remote switch) + CR123A included.
