--- product_id: 543965788 title: "Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change" brand: "k20 tools" price: "NZ$103" currency: NZD in_stock: true reviews_count: 5 category: "K20 Tools" url: https://www.desertcart.nz/products/543965788-fast-cap-adapter-compatible-with-byrna-sd-ep-le-boost store_origin: NZ region: New Zealand --- # Fast cartridge swaps in seconds Tool-free, hand-tightened design Durable anodized aluminum build Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change **Brand:** k20 tools **Price:** NZ$103 **Availability:** ✅ In Stock ## Summary > ⚡ Reload faster, perform better — never get caught unprepared! ## Quick Answers - **What is this?** Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change by k20 tools - **How much does it cost?** NZ$103 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/543965788-fast-cap-adapter-compatible-with-byrna-sd-ep-le-boost) ## Best For - k20 tools enthusiasts ## Why This Product - Trusted k20 tools brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Durable:** Anodized black aluminum finish combines style with rugged reliability. - • **Lightning-Fast Reloads:** Swap CO₂ cartridges in seconds without missing a beat. - • **Secure Seal Every Time:** Hand-tightened cap ensures a perfect fit without over-tightening risks. - • **Effortless Installation:** Tool-free, hand-tightened design means no hex keys, no hassle. - • **Universal Compatibility:** Works seamlessly with BYRNA SD, HD, EP, LE & most third-party CO₂ cartridges. ## Overview The Fast Cap Adapter by K20 Tools is a sleek, anodized aluminum accessory designed for quick, tool-free CO₂ cartridge changes compatible with BYRNA SD, HD, EP, LE models and most third-party brands. Its hand-tightened design guarantees a secure seal, making it an essential upgrade for professionals who demand speed and reliability. ## Description Shop at desertcart.co.uk for Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change : DIY & Tools. Review: I bought the Fast Cap Adapter for my Byrna SDXL launcher and I am very happy with it. It makes changing the CO2 cartridge so much easier and faster than using the factory cap and the magazine tool. I can just twist the cap by hand and replace the cartridge in seconds. No more fumbling with the tool or worrying about losing it. The Fast Cap Adapter is also compatible with the Byrna Boost Adaptor (XL), which allows me to use 12 gram CO2 cartridges instead of 8 gram ones. This gives me more shots per cartridge and more convenience, as 12 gram CO2 cartridges are widely available everywhere. The Fast Cap Adapter is made of stainless steel and has a polished finish. It looks great and feels sturdy. It fits snugly on the CO2 chamber and does not leak or rattle. It is easy to install and remove, and does not damage the launcher or the cartridge. I highly recommend the Fast Cap Adapter to anyone who owns a Byrna SD, EP or HD launcher. It is a great accessory that improves the performance and usability of the launcher. It is worth every penny and I am very satisfied with it. Review: Easier than using the mag key . Thank you ! ## Features - C02 Adapter – Fast cap design allows quick cartridge changes - Compatible with BYRNA SD, HD, EP, LE "Not compatible with CL" - Tool-Free design: Replace the Co2 cylinder in seconds without the hex key - Hand-Tightened: easy to install and remove ensuring a secure seal without over-tightening - Compatible with Byrna CO₂ cartridges and most third-party brands commonly found in local stores - Made of aluminum - Anodized black finish - ORIGINAL DESIGN ## Technical Specifications | Specification | Value | |---------------|-------| | Included components | (1) Fast Cap Adapter | | Manufacturer | K20 Tools | | Color | Black | | Size | Standard | | Material type | Aluminium | | Batteries included? | No | | Department | Unisex | | Item model number | CO2-Byrna-Cap-Adapter | | Product Dimensions | 2.18 x 2.03 x 1.91 cm; 12 g | | ASIN | B0CD181XML | ## Product Details - **Brand:** K20 Tools - **Colour:** Black - **Material:** Aluminium - **Product dimensions:** 20L x 20W millimetres - **Item weight:** 12 Grams ## Images ![Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change - Image 1](https://m.media-amazon.com/images/I/71q04PL6KCL.jpg) ![Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change - Image 2](https://m.media-amazon.com/images/I/61j26WcRsQL.jpg) ![Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change - Image 3](https://m.media-amazon.com/images/I/6135IS7ORJL.jpg) ![Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change - Image 4](https://m.media-amazon.com/images/I/71TmcmgGLwL.jpg) ![Fast Cap Adapter - Compatible with BYRNA SD EP LE - Boost Cartridge Quick Change - Image 5](https://m.media-amazon.com/images/I/71AkuNy2MSL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***F on 7 September 2023* I bought the Fast Cap Adapter for my Byrna SDXL launcher and I am very happy with it. It makes changing the CO2 cartridge so much easier and faster than using the factory cap and the magazine tool. I can just twist the cap by hand and replace the cartridge in seconds. No more fumbling with the tool or worrying about losing it. The Fast Cap Adapter is also compatible with the Byrna Boost Adaptor (XL), which allows me to use 12 gram CO2 cartridges instead of 8 gram ones. This gives me more shots per cartridge and more convenience, as 12 gram CO2 cartridges are widely available everywhere. The Fast Cap Adapter is made of stainless steel and has a polished finish. It looks great and feels sturdy. It fits snugly on the CO2 chamber and does not leak or rattle. It is easy to install and remove, and does not damage the launcher or the cartridge. I highly recommend the Fast Cap Adapter to anyone who owns a Byrna SD, EP or HD launcher. It is a great accessory that improves the performance and usability of the launcher. It is worth every penny and I am very satisfied with it. ### ⭐⭐⭐⭐⭐ Review *by M***R on 30 October 2024* Easier than using the mag key . Thank you ! ### ⭐⭐⭐⭐⭐ Review *by B***C on 20 June 2025* Très pratique ## Frequently Bought Together - Fast Cap Adapter - Compatible with BYRNA SD EP LE HD - Cartridge Quick Change - Byrna 12 Gram CO2 + Oiler Cartridges | 10 Count Pack | for Byrna LE/HDXL/SDXL and TCR - (9 CO2 + 1 Oiler Cylinders) - Byrna MAX Projectiles - | Maximum Stopping Power | OC and CS Non Lethal Pepper Spray & Tear Gas Blend Balls - Non Lethal Self Defense Projectile Rounds for Byrna Launchers, 0.68 Caliber --- ## 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.nz/products/543965788-fast-cap-adapter-compatible-with-byrna-sd-ep-le-boost](https://www.desertcart.nz/products/543965788-fast-cap-adapter-compatible-with-byrna-sd-ep-le-boost) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-05-16*