Protect The Glass That Matters
The Defender screws onto your objective or eyepiece and keeps scratches, dust and impacts off the glass that's more painful to replace. Precision CNC machined, with a low-profile bevelled ring that won’t scratch your eye-pro and textured grip so it tightens properly. And stays tight.
Lens options
| Clear polycarbonate | Amber | Glass | |
|---|---|---|---|
| Best for | Everyday and hard use | Reducing 'Back-Splash' | Maximum clarity |
| Light transmission | ~90% | Not stated | 99.6% |
| Impact protection | Multi-hit rated, tested with BBs and training rounds | Lower than polycarbonate | Low (fragile) |
| Scratch resistance | 35× uncoated polycarbonate | Lower than polycarbonate | High |
| Warranty | Lifetime against breakage, 10 years against yellowing | Lifetime against breakage | Lifetime against breakage |
| Notes | The all-round choice | Softens harsh contrast, reduces eye strain | Best overall Image quality |
KEY FEATURES
COMPATIBILITY: Fits US mil-spec PVS-14 style lenses, including Noctis, Steele, Photonis Boomslang and RPO 3.0 and 4.0 (RPO 4.0 eyepieces need the spacer option). Fit isn’t guaranteed on Optronics, AGM, Apache, ACT or Spyron lenses.
Note: the eyecup retaining ring can’t be used with the defender
Active on Trustpilot as of October 2026
Every item is inspected before dispatch, so you receive genuine, correctly specified parts from trusted manufacturers.
Our supply chain is heavily considered to offer you the best performing parts currently available on the market of EU/UK/US origin
Supplied and technically supported here in England from our Cambridgeshire facility. To speak with a technician, use our contact page.
