--- product_id: 492814236 title: "Sentinel 10-40x50 Second Focal Plane, 1/8 MOA Precise Adjustments, Designed for 25 Meters Benchrest Target Shooting, Turret Lock System, SCOL-34" brand: "vector optics" price: "£171.06" currency: GBP in_stock: true reviews_count: 8 category: "Vector Optics" url: https://www.desertcart.co.uk/products/492814236-sentinel-10-40x50-second-focal-plane-1-8-moa-precise store_origin: GB region: United Kingdom --- # 1/8 MOA ultra-precise click adjustments 10-40x magnification with crystal-clear 50mm lens Turret Lock system prevents accidental zero shifts Sentinel 10-40x50 Second Focal Plane, 1/8 MOA Precise Adjustments, Designed for 25 Meters Benchrest Target Shooting, Turret Lock System, SCOL-34 **Brand:** vector optics **Price:** £171.06 **Availability:** ✅ In Stock ## Summary > 🎯 Lock precision. Zoom clarity. Own the range. ## Quick Answers - **What is this?** Sentinel 10-40x50 Second Focal Plane, 1/8 MOA Precise Adjustments, Designed for 25 Meters Benchrest Target Shooting, Turret Lock System, SCOL-34 by vector optics - **How much does it cost?** £171.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/492814236-sentinel-10-40x50-second-focal-plane-1-8-moa-precise) ## Best For - vector optics enthusiasts ## Why This Product - Trusted vector optics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Zoom Into Victory:** Powerful 10-40x magnification paired with a multi-coated 50mm objective lens delivers razor-sharp clarity on every shot. - • **Lock It Down, Stay On Target:** Innovative turret lock system ensures your settings stay locked, even in the most rugged shooting conditions. - • **Optimized for Competitive Edge:** Tailored specifically for 25m benchrest airgun shooting with a fast-focus eyepiece and perfectly sized reticle center dot. - • **Pinpoint Precision at Every Click:** Experience surgical 1/8 MOA adjustments for flawless zeroing and unmatched accuracy at 25m. - • **Built to Endure, Designed to Perform:** Crafted from aircraft-grade 6061-T6 aluminum, shock tested to 750G, and IPX4 water-resistant for relentless reliability. ## Overview The Vector Optics Sentinel 10-40x50 is a high-performance rifle scope engineered for 25-meter benchrest target shooting. Featuring ultra-fine 1/8 MOA adjustments, a robust turret lock system, and a crystal-clear 50mm multi-coated lens, it delivers exceptional accuracy and durability. Built from aircraft-grade aluminum with shock and water resistance, this scope is optimized for competitive shooters seeking precision and reliability in every shot. ## Description Product description This product is specifically designed for 25m benchrest shooting This product is optimized for 25m benchrest shooting. If you still wish to purchase it, please carefully select suitable scope rings and ensure they match the product's adjustment range and shooting distance. Reticle & Second Focal Plane The reticle is optimized for 25m benchrest shooting. Reticle used at 40x Power, 1.5mm center dot perfect matches target 2mm Dia. Objective Lens Dia - 50mm It offers better light transmission, improved clarity in low-light conditions, and a wider field of view, making it ideal for precision shooting. -2 to +1.5 Diopter Compensation It allows users to adjust the focus for clear vision, accommodating mild nearsightedness (-2) to mild farsightedness (+1.5) without glasses. Adjustment System Click Value: 1/8 MOA Turret Function: Turret Lock Adjustment Range: 50 MOA Common Questions & Answers Shockproof to 750g This product is designed to handle recoil for the following calibers and firearms Fit for Firearms: .223, .308win, .30-06, .300win Fit for PCP & Spring Air Rifles: .177, .22, .25 Why Might a Scope Fail to Zero? A scope failing to zero is often caused by improper installation of scope rings, which can affect alignment and accuracy. Misaligned Axes: The scope rings may not be aligned, causing the scope to slant or tilt. Improper Height: The scope rings may be too low or too high, leading to difficulties in achieving proper alignment. Solutions to Scope Alignment Issues Proper Height Choose scope rings of the correct height to prevent misalignment and ensure the aiming axis matches the bullet trajectory. Adjustment Limitations If the adjustment range is insufficient, use adjustable or angled mounts to achieve proper zeroing. Installation Alignment Install the scope straight and level to maximize adjustment range and accuracy. Specifications Review: Solid scope, great price point. - I got this last weekend and just returned from the 50 yard 22LR range with good results. At 25 yards, the initial rounds were 4 inches low and 4 inches left, but after dialing up and right the appropriate number of clicks, bulls-eye! With 1/8 moa per click this required nearly a 1.5 rotation of each adjuster but after landing close, the sighting adjustments were responsive. At 40 power I can see exactly where they land. It comes with very tall scope rings that are caliper type for a standard rail. They need to be on the tall side because the scope is quite large. Eye relief is what you expect and the focus knob is a used quite a bit as you change magnification. Glass is clear and the cross hairs are fine but that is appropriate for competitive shooting. This is a non-illuminated daytime scope that is best for benchrest shooting. So far, the bang for the buck is on-target. Review: Great scope clear reticle - First off great price for the quality. Image was clear at 40X I had a small dark ring but just a small adjustment of the parallax and it was gone. Second for the one complaining about zeroing issues this scope moves poi 1/8 inch at 100 yards at 50 it's 1/16th simple math. Also when torquing go in a criss-cross patern with both rings. Snug them then torque to 25 inch pounds. ## Features - 【Optimized Optics for 25m Benchrest Shooting】: Diopter compensation from -2 to +1.5 via fast-focus eyepiece. Designed exclusively for air gun benchrest shooting and 25m competition. Reticle used at 40x power, with a 1.5mm center dot perfectly matching a 2mm target diameter - 【Precision Optics and Performance】: The 10-40x scope features adjustable side parallax, 1/8 MOA click adjustments, and a 50mm multi-coated objective lens for accurate targeting and clear visuals. With 50 MOA elevation/windage adjustments and 60 clicks per rotation, it offers fine-tuning capabilities - 【Turret Lock System】: A turret lock safeguards against unintentional adjustments to the scope’s windage and elevation, essential for shooters maintaining accuracy in rugged conditions - 【Durable Performance】: Shock tested to 750G. IPX4 water resistance. Made of 6061-T6 aluminum alloy. Includes a user manual, plastic wrench, cleaning cloth, flip-up caps, hex keys - 【After-sale Service & Maintenance Instructions】: Avoid storing the riflescope in hot places like car compartments. High temperatures can affect lubricants and sealants. The parts are permanently lubricated, so no additional lubrication is needed. Clean the surface with a soft cloth and use lens covers when possible ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BK9D5MRX | | Best Sellers Rank | #142,652 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #288 in Rifle Scopes | | Brand | Vector Optics | | Brand Name | Vector Optics | | Color | black | | Compatible Devices | Rifle | | Customer Reviews | 4.0 out of 5 stars 91 Reviews | | Field Of View | 19.89 Feet | | Item Weight | 1.71 Pounds | | Magnification Maximum | 40 x | | Magnification Minimum | 10 x | | Material | Aluminum | | Material Type | Aluminum | | Model Name | Sentinel X | | Mounting Type | Weaver Mount | | Night vision | No | | Objective Lens Diameter | 50 Millimeters | | Product Style | Benchrest | | Reticle Type | Etched | | Sport | Hunting | | Sport Type | Hunting | | Style | Benchrest | | Unit Count | 1.0 Count | | Warranty Description | / | ## Product Details - **Brand:** Vector Optics - **Color:** black - **Compatible Devices:** Rifle - **Item Weight:** 1.71 Pounds - **Magnification Maximum:** 40 x - **Magnification Minimum:** 10 x - **Material:** Aluminum - **Objective Lens Diameter:** 50 Millimeters - **Sport:** Hunting - **Style:** Benchrest ## Images ![Sentinel 10-40x50 Second Focal Plane, 1/8 MOA Precise Adjustments, Designed for 25 Meters Benchrest Target Shooting, Turret Lock System, SCOL-34 - Image 1](https://m.media-amazon.com/images/I/51XtdWMypyL.jpg) ## Questions & Answers **Q: Is this rated for a break barrel air rifle?** A: Hello Eddie Calvert, Thank you for your interest in the "Vector Optics Sentinel X 10-40x50 SFP Rifle Scope." We're here to provide you with the requested information. This scope is designed for PCP (Pre-Charged Pneumatic) air rifles and is suitable for the following calibers: Maximum Caliber: .177 (4.5mm) Maximum Caliber: .22 (5.5mm) If you have any further questions or need more information, please don't hesitate to ask. We're here to assist you! Best regards, Customer Service Vector Optics Team **Q: First focal plane or second focal plane** A: Vector Optics Sentinel X 10-40x50 Center Dot 1/8MOA Riflescope is the second focal plane **Q: Do the crosshairs illuminate?** A: No they do not illuminate. **Q: Will this scope hold up to the recoil on a .300 Win Mag?** A: This optic is specifically designed for precision air-rifle shooting from a bench at 25 meters. I have it on a .22LR bolt action rifle (I needed the extra magnification). Personally, I would not put it on a .300 Win Mag. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Solid scope, great price point. *by C***Y on March 14, 2025* I got this last weekend and just returned from the 50 yard 22LR range with good results. At 25 yards, the initial rounds were 4 inches low and 4 inches left, but after dialing up and right the appropriate number of clicks, bulls-eye! With 1/8 moa per click this required nearly a 1.5 rotation of each adjuster but after landing close, the sighting adjustments were responsive. At 40 power I can see exactly where they land. It comes with very tall scope rings that are caliper type for a standard rail. They need to be on the tall side because the scope is quite large. Eye relief is what you expect and the focus knob is a used quite a bit as you change magnification. Glass is clear and the cross hairs are fine but that is appropriate for competitive shooting. This is a non-illuminated daytime scope that is best for benchrest shooting. So far, the bang for the buck is on-target. ### ⭐⭐⭐⭐⭐ Great scope clear reticle *by B***R on August 4, 2025* First off great price for the quality. Image was clear at 40X I had a small dark ring but just a small adjustment of the parallax and it was gone. Second for the one complaining about zeroing issues this scope moves poi 1/8 inch at 100 yards at 50 it's 1/16th simple math. Also when torquing go in a criss-cross patern with both rings. Snug them then torque to 25 inch pounds. ### ⭐ Used Item Sold As New-Buyer Beware *by P***B on August 23, 2025* Please make sure you check the white sealing tape BEFORE you attempt to open the scope packaged box; mine was previously opened with broken seals (left and right) of the box alerting me that it had been opened and NOT a NEW item. There are so many things wrong with this inexpensive scope at different levels: as many others have said, this SFP reticle is way too thin and IMPOSSIBLE to see on cloudy days or viewing your target at less than bright daylight. It would go a long way if the reticle was illuminated but because of its price point they elected to keep it on the cheap and no illumination. The 50mm objective lens is too small for 40x zoom and coupled with a 1 inch tube there is not enough light coming through at the higher magnification range; this is one very dark scope. The reticle has been manufactured for 25 meter bench-rest shooting but most bench-rest shooting is done at 50 yards (meters) so the reticle is not very useful beyond 25 meters. ## Frequently Bought Together - Vector Optics Sentinel 10-40x50 Second Focal Plane, 1/8 MOA Precise Adjustments, Designed for 25 Meters Benchrest Target Shooting, Turret Lock System, SCOL-34 - Monstrum Adjustable Height, Adjustable MOA, Picatinny Scope Rings | 30 mm Diameter | Includes 1 inch Diameter Inserts - WestHunter Optics Precision Picatinny Scope Rings with 120 MOA Adjustment, 1 Inch 30mm 34mm Tube Adjustable Height Scope Mount with Bubble Level --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/492814236-sentinel-10-40x50-second-focal-plane-1-8-moa-precise](https://www.desertcart.co.uk/products/492814236-sentinel-10-40x50-second-focal-plane-1-8-moa-precise) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-27*