10 Umarex Glock 17 Mos of 2026 For Red Dot Training

1

American Safety Trainer - (Compatible with Glock 17 Gen 3)

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  9.4
• Brand
  Holstex

Key specs2

Training Functionality

This inert solid polymer unit serves strictly for holster retention and draw practice, omitting firing mechanisms and optic mounting cuts.

Platform Generation

Glock 17 Gen 3 holster fit

Pros & cons32

Pros

• Solid polymer build provides realistic holster fitment practice without accidental discharge risk
• High-visibility Blaze Orange color ensures instant identification during handling routines
• Designed specifically to match Glock 17 Gen 3 frame dimensions for holster compatibility

Cons

• Completely inert solid body lacks an operational cycling slide and trigger mechanism
• Does not feature an MOS optic cut or mounting surface for red dot training

2

Glock 17 Gen 5 MOS Blowback 6mm BB Gun Airsoft

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  9.4
• Brand
  Elite Force

Key specs2

Slide Optic Cut

Factory Gen 5 MOS slide system

Action Mechanism

Full blowback design cycles the slide with every 6mm BB fired, closely replicating the handling cycle of the standard firearm platform.

Pros & cons42

Pros

• Factory Gen 5 MOS slide cut allows direct mounting of compatible micro red dot optics
• Full blowback action provides realistic slide cycling and recoil impulse during practice
• Authentic Gen 5 frame dimensions match duty holsters and weapon-mounted accessories
• Standard 6mm airsoft BB caliber enables force-on-force training on airsoft fields

Cons

• Requires verifying specific optic plate patterns before securing micro reflex sights
• Does not include green gas or CO2 propellant cartridges in the pistol package

3

T4E Glock G17 Gen 5 .43 Caliber Paintball Marker Magazine,

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  9.0
• Brand
  T4E

Key specs2

Ammunition Caliber

.43 caliber paint and powder balls

Marker Compatibility

Engineered specifically for T4E Glock G17 Gen 5 markers (part numbers 2292166 and 2292167) and will not feed 6mm airsoft pistols.

Pros & cons32

Pros

• Holds 8 rounds of .43 caliber paintballs or rubber powder balls for marker drills
• Quick-piercing base allows instant 12g CO2 cartridge activation with a light bump
• Tool-free CO2 replacement enables swift cartridge swaps during field practice

Cons

• Incompatible with 6mm airsoft Glock 17 models due to its .43 caliber paintball design
• Limited to 8-round capacity compared to standard high-capacity 6mm airsoft magazines

4

SOLOFISH Low Profile Beams for Guns, Magnetic Rechargeable Red Beam

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.8
• Brand
  Solofish

Key specs2

Rail Fitment Requirements

• Requires 21mm Picatinny accessory rail
• Needs 1.26 in clearance to trigger guard
• Secures with single screw across 3 slot options

Laser Specifications

Features a safe Class IIIA red beam under 5mW at 532nm with interactive windage and elevation adjustment screws.

Pros & cons42

Pros

• Ultra-lightweight 1.01 oz fiber-reinforced nylon body minimizes front-end muzzle weight
• Rechargeable internal battery provides up to 2 hours of continuous run time per charge
• Class IIIA red beam reaches up to 100 ft in daylight and 1000 ft in dark environments
• Ambidextrous side buttons allow instant activation for left- or right-handed shooters

Cons

• Mounts beneath the frame on a Picatinny rail rather than onto the MOS slide cut
• Requires at least 1.26 inches of clearance between the rail cross slot and trigger guard

5

Glock 19X Half Blowback 6mm BB Pistol Airsoft Gun Magazine,

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.6
• Brand
  Elite Force

Key specs2

Blowback System Compatibility

Half-blowback 19X pistols only

Magazine Fitment Note

Designed exclusively for half-blowback Glock 19X airsoft pistols and will not function in full-size Glock 17 Gen 5 MOS blowback handguns.

Pros & cons32

Pros

• 14-round capacity provides steady feeding for 6mm airsoft BB shooting sessions
• Compact form factor matches the subcompact grip profile of the Glock 19X frame
• Authentic Elite Force build quality ensures correct valve sealing in compatible pistols

Cons

• Built strictly for half-blowback models and does not fit full blowback Glock 17 slides
• Shorter 19X body length fails to lock securely into full-size Glock 17 magazine wells

6

ohhunt RD U5 3 MOA Red Dot Open Reflex Sight

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.6
• Brand
  ohhunt

Key specs2

Slide Compatibility

Full-size Glock MOS systems

Optic Reticle and Build

• 3 MOA open reflex red dot reticle
• Machined 7075 aluminum housing
• Direct fit on Glock 17 Gen 5 MOS footprint

Pros & cons42

Pros

• Direct compatibility with full-size Glock MOS cuts including Glock 17 Gen 5 systems
• Tough 7075 aluminum housing withstands slide cycling vibrations and recoil force
• Crisp 3 MOA red dot reticle offers precise target acquisition on paper and targets
• Open reflex design provides an unobstructed field of view for rapid sight alignment

Cons

• Does not fit standard non-MOS Glock slides without dedicated adapter plates
• Requires verifying optic mounting screw thread length before tightening to the slide

7

oupuntoe No-Tritium Fiber Optic Sights for Glock 17, 17L, 19,

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.0
• Brand
  oupuntoe

Key specs2

Slide Compatibility

Standard Glock dovetail only (excludes MOS)

Sighting Mechanism

Tri-dot green fiber optic aiming layout enclosed in aluminum alloy, requiring ambient daylight for proper illumination.

Pros & cons42

Pros

• Dual green fiber optic elements gather ambient light for bright day target sighting
• Machined aluminum alloy body provides durable protection against exterior impact
• Contrasting front and rear tri-dot layout promotes quick three-point sight alignment
• Includes an installation allen wrench for adjusting the front and rear dovetail screws

Cons

• Explicitly excludes Glock MOS models due to different rear sight dovetail clearances
• Lacks tritium illumination and is not recommended by the manufacturer for night use

8

Wcone Red Dot Sight Mount Adapter Plate for Non-MOS Airsoft

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  8.0
• Brand
  Wcone

Key specs2

Mounting Platform

Non-MOS airsoft rear dovetail slot

Optic Footprint Support

Machined specifically to seat RMR and RMRS footprint airsoft micro optics onto non-MOS Glock airsoft slides.

Pros & cons32

Pros

• Enables mounting RMR footprint red dots on standard non-MOS airsoft Glock slides
• Lightweight aluminum alloy build adds minimal reciprocal weight to the cycling slide
• Installs directly into the standard rear sight dovetail slot without permanent slide cuts

Cons

• Explicitly incompatible with factory Glock MOS cutout slides or Glock 43X/48 frames
• Eliminates standard rear iron sight reference by occupying the factory dovetail cut

9

Elite Force Umarex 2276320 Airsoft Accessories Magazines

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  7.6
• Brand
  Elite Force

Key specs2

Part Identification

Elite Force part number 2276320

Ammunition Type

Standard 6mm airsoft BBs

Pros & cons32

Pros

• Genuine Umarex Elite Force magazine part engineered for airsoft Glock platforms
• Heavy-duty metal construction provides realistic weight and reliable gas chamber seals
• Feeds standard 6mm plastic airsoft BBs consistently through the top loading lip

Cons

• Part number specifications must be checked to confirm green gas versus CO2 valve type
• Specific round capacity is not detailed in the manufacturer listing specifications

10

Wcone Non-MOS Airsoft 3MOA Reflex Red Dot Sight Shake Awake

View on Amazon

• ARS Mark

  ARS Mark is a ranking system developed by bestairriflescopes.com. ARS Mark has no relationship or impact from any manufacturers or sales agent websites. Learn more

  6.0
• Brand
  Wcone

Key specs2

Optic Features

• Shake to wake with 2-minute auto sleep
• 12 manual brightness levels
• 1200G shockproof aluminum body

Mounting Platform

Non-MOS airsoft Glock series

Pros & cons42

Pros

• Shake to wake and 2-minute auto-sleep functions conserve battery life between uses
• Rated for 1200G shock resistance to endure repeated airsoft slide recoil forces
• Offers 12 brightness settings and up to 50,000 hours of run time at the lowest mode
• Multi-coated anti-fog lens pairs with 1 MOA per click windage and elevation detents

Cons

• Built for non-MOS airsoft mounting systems and will not bolt directly to MOS cuts
• Adds 0.23 lb to the rear slide assembly which may alter blowback cycle speed

Last update on 2026-10-10 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Which red dot sights fit the Umarex Glock 17 Gen 5 MOS slide cutout?

Optics specifically designed for full-size Glock MOS systems, such as the ohhunt RD U5 3 MOA reflex sight, fit the factory slide cutout. You cannot use optics or mounting plates made for standard airsoft slides, because accessories like the Wcone adapter plate and non-MOS reflex sights are explicitly incompatible with MOS slide cuts. Always check the optic specifications to confirm it supports full-size MOS slide patterns instead of a rear dovetail press-fit mount.

How does an MOS slide cut differ from a standard rear dovetail sight mount?

An MOS slide features a dedicated factory cutout machined directly into the top of the slide rather than relying on the rear sight dovetail slot to anchor an optic. Standard airsoft slides require aftermarket adapter plates that replace the rear sight dovetail, like the Wcone non-MOS plate, which will not fit into an MOS cut. Mounting a micro reflex sight directly to the dedicated MOS cut keeps the optic properly aligned without altering your rear sight channel.

Can iron sights made for standard Glock slides fit an MOS model?

No, standard iron sights designed for non-MOS slides do not fit factory MOS models. Sights such as the oupuntoe green fiber optic sight set fit standard Glock 17 models but specifically exclude MOS configurations due to differences in slide geometry and sight placement. If you want backup iron sights, confirm that the sight set explicitly lists compatibility with MOS slides before purchasing.

Will T4E or half-blowback Glock magazines work in the Gen 5 MOS blowback pistol?

No, magazines from .43 caliber markers or half-blowback models will not function in a 6mm blowback pistol. The T4E Glock 17 Gen 5 magazine (part 2292169) holds 8 rounds of .43 caliber paint or powder balls and houses a 12-gram CO2 cartridge, while the Glock 19X half-blowback magazine holds 14 rounds for a completely different action mechanism. When selecting gear for realistic training and plinking, verify that your magazine matches 6mm BB blowback specifications, such as Elite Force Umarex part 2276320.

What rail clearance is needed to add an under-barrel laser to the frame?

Under-barrel accessories require a standard 21mm Picatinny rail with at least 1.26 inches of installation space. Compact accessories like the SOLOFISH red beam provide three alternative screw mounting holes and secure with a single screw to fit along the accessory rail. Check your frame dimensions to ensure you have 1.26 inches of clear rail ahead of the trigger guard.

Can a solid polymer Glock trainer accept an MOS slide or red dot sight?

No, inert trainers cannot accept modular slides, optics, or internal mechanical upgrades. Models such as the American Safety Trainer for the Glock 17 Gen 3 are non-functional, solid polymer molds in blaze orange designed strictly for holster fit and retention drills. To run an optic setup during practice, verify you are choosing a functional blowback pistol like the Glock 17 Gen 5 MOS rather than a molded dummy gun.