By Peter Makulek · Senior Optics Editor · · Live prices from UK retailers
A laser bore sighter lets you get a rifle scope onto paper at short range without firing a shot — useful when mounting a new scope, swapping between rifles, or re-zeroing after a knock. For air rifles especially, where pellets are expensive relative to rimfire and each misaligned shot wastes time at the range, a bore sighter is a practical tool.
There are two main types: arbor-type bore sighters (a laser mounted on a barrel-calibre arbor that inserts into the muzzle) and magnetic bore sighters (attach to the crown magnetically). Arbor types are more accurate as they sit concentrically in the bore; magnetic types are more versatile across calibres but slightly less repeatable.

via BushWear
£9.99

via Sportsman Gun Centre
£10.99

via Sportsman Gun Centre
£10.99
For air rifle use, an arbor-type bore sighter in .177 or .22 (whichever matches your rifle) gives the most consistent results. Set up at 10–15 metres, align the scope crosshair with the laser dot, and you should be within a few centimetres of zero when you go to the range for final adjustment.
Bore sighters save you ammunition and time on zero — they do not replace live-fire zeroing. Treat bore sighting as "on paper at 20 yards" rather than "fully zeroed". Always confirm and fine-tune zero with live pellets at your intended shooting distance.
A laser bore sighter is a device that emits a laser beam aligned with the centreline of the rifle barrel. By aligning the scope's crosshairs to the projected laser dot (usually at a wall 10–20 metres away), you set an approximate zero that should put your first shots on paper. It eliminates the need to fire multiple adjustment shots from a cold zero before getting on target.
For getting within 2–5 cm of zero at 25 yards without firing a shot, yes — a quality arbor-type bore sighter is very effective. For a final zero for field target or pest control shooting, you still need to fire and adjust at your intended range. Think of bore sighting as "getting on paper quickly" rather than a substitute for live zero confirmation.
You need a .177 (4.5mm) arbor. Most bore sighter kits sold in the UK include multiple arbors in common calibres (.177, .22, .243, .308, etc.). If buying a standalone arbor, match it to your barrel calibre exactly — a loose-fitting arbor will give inaccurate results.
Yes, a muzzle-end arbor bore sighter works fine on a break-barrel air rifle. The muzzle-end insertion method is calibre-specific and accurate regardless of action type. Avoid using a chamber-insert (breech) bore sighter on a break-barrel as the arbor design assumes a bolt or straight bolt-action breech geometry.
Find the best scope for a PCP air rifle in the UK for 2026. Expert advice on magnification, reticles, parallax and budget picks from under £100 to premium glass.
Best Scopes for Springer Air Rifles in 2026Find the best scope for a springer air rifle in the UK for 2026. Expert advice on springer-rated optics, magnification, budget tiers and top picks from Hawke, MTC, BSA and more.
Best Day/Night Scopes for Air Rifles in 2026Expert UK guide to the best day night scopes for air rifles in 2026. We compare Pard, Hikmicro and Yukon digital optics for pest control, foxing and ratting on PCP and springer platforms.
Best Air Rifle Scopes for Rabbit Shooting in 2026Discover the best scope for rabbit shooting in the UK for 2026. Expert advice on magnification, parallax, reticles and budget picks for airgun pest control.
Best Air Rifle Scopes for Hunting in the UK (2026)Find the best scope for air rifle hunting in 2026. Our UK buyer's guide covers rabbit and vermin optics, springer-rated picks, budget options under £100, and reticle advice.
Not sure which scope is right for you?
Try our AI-powered scope finder — answer a few questions and get personalised recommendations.
Find My Scope →Get a UK scope tip every day
Follow AiScopes on Facebook for daily buying guides, deals and gear advice.
Follow on Facebook