--- product_id: 733853959 title: "UTG Super Slim Rdm20 Mount for Glock Rear Sight" brand: "utg" price: "£0.80" currency: GBP in_stock: false reviews_count: 5 url: https://www.desertcart.co.uk/products/733853959-utg-super-slim-rdm20-mount-for-glock-rear-sight store_origin: GB region: United Kingdom --- # Ultra-low 0.16" saddle height Locking Torx screws with protected inserts 6061-T6 aircraft aluminum CNC machined UTG Super Slim Rdm20 Mount for Glock Rear Sight **Brand:** utg **Price:** £0.80 **Availability:** ❌ Out of Stock ## Summary > 🔫 Elevate your Glock game with the stealthiest mount in the room! ## Quick Answers - **What is this?** UTG Super Slim Rdm20 Mount for Glock Rear Sight by utg - **How much does it cost?** £0.80 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/733853959-utg-super-slim-rdm20-mount-for-glock-rear-sight) ## Best For - utg enthusiasts ## Why This Product - Trusted utg brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Secure Locking Mechanism:** Lock Torx screws with protected slots guarantee rock-solid mounting and long-term reliability. - • **Ultra-Low Profile Design:** At just 0.16" saddle height, it ensures minimal sight obstruction and sleek integration with your Glock. - • **Permanent Upgrade Hardware:** Includes installation tools and hardware designed for a permanent, professional-grade sight mount. - • **Tailored for Glock Double Stack:** Specifically engineered for seamless compatibility and easy installation on Glock rear sight dovetails. - • **Precision CNC Machined Durability:** Crafted from premium 6061-T6 aircraft aluminum for unmatched strength and lightweight performance. ## Overview The UTG Super Slim RDM20 Mount is a precision CNC-machined, matte black 6061-T6 aircraft aluminum mount designed for Glock double stack pistols. Featuring an ultra-low 0.16" saddle height and secure locking Torx screws, it offers a sleek, durable platform for the UTG RDM20 Reflex Micro Dot sight. Installation requires permanent modifications, ensuring a professional and reliable upgrade for serious shooters. ## Description UTG スーパースリムRDM20マウント、UTG RDM20マイクロリフレックスサイト用、マットブラック仕上げの航空機アルミニウムから機械加工、リアサイトダブテールに取り付けるためのグロックダブルスタックピストルと互換性があります。 取り付け金具と工具が含まれています。 0. サドル高さ15インチ、1. 長さ84インチ、1. 幅10インチ。 Review: I can confirm the UTG Super Slim RDM20 mount does fit a Gen 5 Glock 17 and a Vortex Venom. A sight press is highly recommended as it is a tight fit. Review: This was purchased for a Glock 19 Gen 4, to mount the inexpensive UTG red dot sight. The Glock rear sight is removed, an insert installed into the dovetail slot, and the sight mounting base attached to the insert with two screws. This seems to be a solid platform, and my sight appears to be quite secure when mounted. A slight collar around each hole in the dovetail provides good indexing of the sight base. Mounting screws come with a bit of blue thread locker applied. The potential installation issue is that the insert is extremely tight in the dovetail slot - not much chance that the mount will drift sideways with use. This is similar to, or perhaps tighter than, a replacement sight. Fortunately I already had a sight pusher tool; I would not have been able to tap this insert into place with a mallet and drift punch. An alternative would be to file a bit off the insert, but it is small and may be difficult to work with. The "Ade Advanced Optics Glock Tactical Mini Dotx Sight Pistol Mount Base" (also sold on desertcart) may be a better option for those without sight pushers. My ADE dovetail insert for another Glock pistol fit loosely enough to be easily inserted by hand. The mounting base is slightly curved on the sides, conforming to a stock Glock slide to both capture the insert and to be self-centering. The base mounting screws tighten up the assembly and hold it in place. The UTG mount fits the ADE sight, and the ADE mount accommodates the UTG sight. This seems to be a somewhat "standard" pattern used by Burris, Docter, Vortex, and others. This type of mount can be very good for those who want to experiment with inexpensive red dots before buying higher-end sights and milled slides, though the sight will sit noticeably higher without slide milling. The UTG has been a high quality mount so far. ## Features - CNC machined from 6061-T6 aircraft aluminum with matte black finish - Low profile 0.16" saddle height position UTG rdm20 Reflex Micro Dot, lowest possible structural integrity and performance - The lock Torx screws and slot inserts are protected to store - Compatible with Glock Double Stack Rifles and easy to install with shaped rear sight - The installation hardware requires permanent modifications ## Technical Specifications | Specification | Value | |---------------|-------| | Model Number | RDM-20GL | | Target Audience | people | | Package Dimensions | 12.6 x 6.9 x 0.5 cm; 15.02 g | ## Images ![UTG Super Slim Rdm20 Mount for Glock Rear Sight - Image 1](https://m.media-amazon.com/images/I/61XntW+jRrL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on July 13, 2019* I can confirm the UTG Super Slim RDM20 mount does fit a Gen 5 Glock 17 and a Vortex Venom. A sight press is highly recommended as it is a tight fit. ### ⭐⭐⭐⭐ Review *by S***5 on July 21, 2019* This was purchased for a Glock 19 Gen 4, to mount the inexpensive UTG red dot sight. The Glock rear sight is removed, an insert installed into the dovetail slot, and the sight mounting base attached to the insert with two screws. This seems to be a solid platform, and my sight appears to be quite secure when mounted. A slight collar around each hole in the dovetail provides good indexing of the sight base. Mounting screws come with a bit of blue thread locker applied. The potential installation issue is that the insert is extremely tight in the dovetail slot - not much chance that the mount will drift sideways with use. This is similar to, or perhaps tighter than, a replacement sight. Fortunately I already had a sight pusher tool; I would not have been able to tap this insert into place with a mallet and drift punch. An alternative would be to file a bit off the insert, but it is small and may be difficult to work with. The "Ade Advanced Optics Glock Tactical Mini Dotx Sight Pistol Mount Base" (also sold on Amazon) may be a better option for those without sight pushers. My ADE dovetail insert for another Glock pistol fit loosely enough to be easily inserted by hand. The mounting base is slightly curved on the sides, conforming to a stock Glock slide to both capture the insert and to be self-centering. The base mounting screws tighten up the assembly and hold it in place. The UTG mount fits the ADE sight, and the ADE mount accommodates the UTG sight. This seems to be a somewhat "standard" pattern used by Burris, Docter, Vortex, and others. This type of mount can be very good for those who want to experiment with inexpensive red dots before buying higher-end sights and milled slides, though the sight will sit noticeably higher without slide milling. The UTG has been a high quality mount so far. ### ⭐⭐⭐⭐ Review *by D***N on April 10, 2019* Looks good but I have not tried it on my firearm ## Frequently Bought Together - UTG Super Slim RDM20 Mount for Rear Sight Dovetail - UTG Super Slim RMR Mount, for Glock Rear Sight Dovetail, Black --- ## 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/733853959-utg-super-slim-rdm20-mount-for-glock-rear-sight](https://www.desertcart.co.uk/products/733853959-utg-super-slim-rdm20-mount-for-glock-rear-sight) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-03*