Vortex Viper 1 Inch Extended Cantilever Mount

Viper 1 Inch Cantilever Mount: Gets Your Scope Where Your Eye Is

Anyone who's tried to mount a scope on a flat-top rifle knows the problem — the rings sit where the rail is, not where your eye is, and you end up craning forward off the stock hunting for a full sight picture. The Vortex Viper 1 Inch Mount solves both halves at once. The cantilever arm pushes the rings forward so the scope sits where it needs to be for correct eye relief, and the 1.435 inch centre height clears the barrel and iron sights on a standard flat-top. One piece, both rings machined in line, so there's no fiddling to get them aligned. Made in the USA and covered by the VIP warranty like the rest of the range.

Add one to your cart and mount it properly the first time.

Check two things before ordering: this mount takes 1 inch scope tubes (not 30mm), and it clamps to a Picatinny or Weaver-style rail. Measure your scope tube if you're not certain.

Free shipping Australia-wide. Backed by the Australian Vortex VIP unlimited lifetime warranty.

Viper 1 Inch Mount: What You Get

• You get a full sight picture without stretching for it — the cantilever arm moves the rings forward of the clamp, putting the scope at the right eye relief for a flat-top rifle so your cheek stays welded to the stock instead of creeping up the comb.
• Your rings arrive already aligned — both rings are machined as one piece at a fixed 1.435 inch centre height, which removes the lapping and shimming faff you get with two separate rings and the misalignment that quietly strains a scope tube.
• The scope clears the barrel and your irons — that 36.45mm centre height is set for standard flat-top receivers, so a typical objective bell sits clear and you're not discovering the clearance problem after you've torqued everything down.
• One mount, one clamp, no drama — it's a single unit that clamps straight to a Picatinny or Weaver rail, so fitting is a matter of positioning and torquing rather than assembling a stack of parts.
• If it ever lets you down, it's covered — the Vortex VIP warranty applies here the same as it does to their optics, so a mount that fails is repaired or replaced regardless of how it happened.

Viper 1 Inch Cantilever Mount Specifications

Viper 1 Inch Mount FAQs

Will this fit my scope and rifle?
Two checks. The scope tube must be 1 inch — if yours is 30mm, this isn't the right mount and you'll need the 30mm version. The rifle needs a Picatinny or Weaver-style rail, which covers most modern flat-top receivers. If you're unsure about your tube diameter, it's usually printed on the scope or in its manual, and we're happy to check for you before you order.

What does "cantilever" actually mean, and do I need one?
It means the rings are offset forward of the clamp rather than sitting directly above it. You need that on a flat-top rifle where the rail ends behind where the scope wants to sit — without the offset you can't get far enough forward for correct eye relief. On a rifle with a long rail you may not need one, but the forward position also gives you more room to shuffle the scope for a comfortable fit.

How do I fit it safely?
Clamp it to the rail first and set fore-aft position by shouldering the rifle until you see a full, clear picture with no dark ring at the edge. Then level the scope, snap the reticle square, and tighten the ring caps gradually in a criss-cross pattern rather than one screw at a time. Use a torque driver to the values in your scope's manual — overtightening rings is the most common way people damage a scope tube. Always confirm the rifle is unloaded before you start.

What does the VIP warranty actually cover?
Vortex will repair or replace the mount if it's damaged or defective, no matter how it happened or whose fault it was. No warranty card, no receipt to keep, and it transfers if you sell it on. It doesn't cover loss, theft, misuse or deliberate damage, and return postage to the service centre is on you.