--- product_id: 320291734 title: "Advanced Focus String – Vision Training Tool for Shooters | Dry Fire Accuracy Trainer with Front Sight Beads | Navy Seal Video Lessons Included" brand: "chris sajnog" price: "€ 63.45" currency: EUR in_stock: true url: https://www.desertcart.fi/products/320291734-advanced-focus-string-vision-training-tool-for-shooters-dry-fire store_origin: FI region: Finland --- # 6ft training string Lightweight at 23g Adjustable focus beads Advanced Focus String – Vision Training Tool for Shooters | Dry Fire Accuracy Trainer with Front Sight Beads | Navy Seal Video Lessons Included **Brand:** chris sajnog **Price:** € 63.45 **Availability:** ✅ In Stock ## Summary > 🔫 Elevate Your Aim, Dominate the Range! ## Quick Answers - **What is this?** Advanced Focus String – Vision Training Tool for Shooters | Dry Fire Accuracy Trainer with Front Sight Beads | Navy Seal Video Lessons Included by chris sajnog - **How much does it cost?** € 63.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/320291734-advanced-focus-string-vision-training-tool-for-shooters-dry-fire) ## Best For - chris sajnog enthusiasts ## Why This Product - Trusted chris sajnog brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Home Training:** Perfect for practicing shooting with both eyes open. - • **Expert Guidance:** Includes free online video instructions from a seasoned instructor. - • **Precision Focus:** Five adjustable beads to enhance your aiming skills. - • **Train Like a Pro:** Designed by a Navy SEAL Sniper for elite performance. - • **Compact & Portable:** Lightweight and easy to store, train anywhere! ## Overview The Chris Sajnog Advanced Focus String is a cutting-edge training tool designed to enhance your shooting accuracy and speed. Created by a Navy SEAL Sniper in collaboration with eyesight performance optometrists, this 6-foot adjustable string features five focus beads that help you train your eyes to shoot faster with both eyes open. With free online video instructions, you can master your skills from the comfort of your home. ## Description Chris SajnogAdvanced Focus String - Firearms Vision Training Tool - Train Your Eyes at Home, to Shoot Faster with Both Eyes Open + Free Online Video Instructions with Navy Seal Sniper Instructor ## Features - Designed by a Navy SEAL Sniper with the help of eyesight performance optometrists - Five adjustable square (LIKE YOUR FRONT SIGHT POST), black focus beads - Each bead has white markings - AIM SMALL - MISS SMALL! - String color may vary - International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | Color | Black | | Style | Modern | | Compatible with | Rifle | | Item display length | 6 Feet | | Weight | 23 g | | Batteries included? | No | | Brand | Chris Sajnog | | Manufacturer | Center Mass Group, LLC | | Item model number | 4350070883 | | Package Dimensions | 16.4 x 10.4 x 1.7 cm; 68 g | | ASIN | B074JJPPP5 | ## Product Details - **Brand:** Chris Sajnog - **Colour:** Black - **Style:** Modern - **Compatible devices:** Rifle - **Night vision:** No - **Manufacturer:** Center Mass Group, LLC - **UPC:** 642554625089 ## Images ![Advanced Focus String – Vision Training Tool for Shooters | Dry Fire Accuracy Trainer with Front Sight Beads | Navy Seal Video Lessons Included - Image 1](https://m.media-amazon.com/images/I/71mgbOQ9FoL.jpg) ## Questions & Answers **Q: Can someone please give me an overview on how this works? Thanks!** A: It is "Brock string eye exercise". The clinical use are exercises over a period of time to train the eye muscles to work together and exercise the muscles that focus the. I never seen a claim that helps aging eyes focus on close work, but It it seem to help me 35 years ago. My son was having reading problems in school and Brocks exercises were one of many things tried on him he didn't particularly care to do. I did them with him every night for a month. I don't think it helped his reading but sure heled my problems with eye strain form 18 hour day at a computer terminal. I have used a few times over the years for treating too much time at screen and i think it works for me. I'm 77 and can still see the sights with out glasses. **Q: how do i attach the string to my corneas?** A: Hi. The string does not attach to your face or any body parts. Checkout the instructions. I have found the focus string to be a good training tool. Good luck. https://s3-us-west-1.amazonaws.com/chrissajnogshares/Chris+Sajnog%E2%80%99s+Front+Sight+Focus+String+Directions.pdf **Q: Should I start with the regular focus string and move up to the advanced one or should I just start off with the advanced focus string?** A: Start off with one of each and one for each of your friends! Kidding. (kinda) They each have their advantages, but if you're using it for shooting I'd get the advanced one. If you want some variety down the road then get the regular one. If it's not for shooting, I'd go the other way around. **Q: I got a string, with beads on it and no instructions. What am i supposed to do with this please?.** A: Hi. Try this link to the pdf instructions. https://s3-us-west-1.amazonaws.com/chrissajnogshares/Chris+Sajnog’s+Front+Sight+Focus+String+Directions.pdf I use the focus string. I think it is an excellent training tool. Chris Sajnog’s training is right on. Good luck. ## Frequently Bought Together - Chris Sajnog Advanced Focus String - Firearms Vision Training Tool - Train Your Eyes at Home, to Shoot Faster with Both Eyes Open + Free Online Video Instructions with Navy Seal Sniper Instructor - Vibra-TITE 213 VC-3 Threadmate Threadlocker, -65 to 165 Degree F, 5mL Tube, Red - KNINE OUTDOORS Torque Screwdriver Wrench Driver Set 10-70 Inch Pounds lbs for Maintenance with T-bar Handle, 40 Hex Bits, 1/4" Socket, Shaft Extension, for Tools, Bike Repairing and Mounting, Orange --- ## 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.fi/products/320291734-advanced-focus-string-vision-training-tool-for-shooters-dry-fire](https://www.desertcart.fi/products/320291734-advanced-focus-string-vision-training-tool-for-shooters-dry-fire) --- *Product available on Desertcart Finland* *Store origin: FI* *Last updated: 2026-05-17*