10 Umarex 850 M2 Kit of 2026 To Complete Your Rifle

1

Air Fill QC Probe Adapter for Umarex AirSaber, AirSaber Elite

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

  10.0
• Brand
  Generic

Key specs1

Intended PCP Platforms

• Umarex AirSaber and AirSaber Elite X2
• Umarex Notos PCP air rifle

Pros & cons32

Pros

• Connects quick-disconnect fill whips directly to factory PCP fill ports
• Compatible with Umarex AirSaber, AirSaber Elite X2, and Notos airguns
• Compact quick-connect probe design simplifies high-pressure charging setups

Cons

• Built for PCP charging probes rather than CO2 rifle chambers
• Requires a separate external air supply source and compatible fill whip

2

Umarex ReadyAIR Gen 2 Portable High Pressure Air Compressor Pump

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

  9.6
• Brand
  Umarex

Key specs1

Primary Function

Delivers high-pressure air fills for PCP airguns and PCP rifles without requiring manual pumping or tank refills.

Pros & cons32

Pros

• Eliminates reliance on external dive shops or manual hand pumps for fills
• Portable footprint suits dedicated home workbenches and remote shooting sites
• Engineered by Umarex specifically for charging modern PCP air rifles

Cons

• Dedicated to high-pressure PCP systems and cannot charge standard CO2 guns
• Substantial equipment bulk takes up noticeable space on the shooting bench

3

Beretta 92A1 CO2 Full Auto BB Pistol air Pistol

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

  9.6
• Brand
  Beretta

Key specs2

Action and Firing Modes

Delivers blowback cycling with both semi-automatic and full-automatic firing options.

Velocity Benchmark

330 FPS

Pros & cons42

Pros

• Selectable semi-automatic and full-automatic firing modes with blowback
• Drop-free metal magazine holds 18 steel BBs alongside the CO2 power source
• Listed muzzle velocity reaches 330 feet per second for close-range practice
• Backed by a one-year limited warranty from the manufacturer

Cons

• Fires steel BBs rather than standard .177 caliber target pellets
• Handgun magazine format does not interchange with full-length air rifles

4

JT Paintball 90G Prefilled CO2 Cylinders - 6 Pack -

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

  9.2
• Brand
  JT

Key specs2

Gas Supply Size

90-gram prefilled cylinders (6 pack)

Thread Compatibility

Fits airguns and airbows threaded for standard 88g and 90g tanks, but requires model 40293 or 40298 adapters on paintball markers.

Pros & cons32

Pros

• Supplies six individual 90g prefilled CO2 tanks in a single bundle
• Provides extended shooting sessions without frequent cylinder swaps
• Directly threads into compatible airguns and airbows built for 90g capsules

Cons

• Paintball marker applications require specific adapter models 40293 or 40298
• Disposable canisters cannot be refilled once depleted on the range

5

Umarex .177 Caliber Pellet Air Gun Rotary Magazine (Pack of

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
  Umarex

Key specs2

Magazine Construction

Aluminum 8-shot rotary design

Caliber and Capacity

• .177 caliber pellets only
• 8 rounds per rotary cylinder
• Pack of 3 magazines

Pros & cons42

Pros

• Crafted in Germany from durable aluminum for reliable rotary feeding
• Includes three 8-round rotary magazines to speed up bench shooting sessions
• Handles standard .177 caliber lead pellets across multiple Umarex models
• Lightweight aluminum design weighs just 0.07 pounds across the pack

Cons

• Restricted to .177 pellets and incompatible with .22 caliber barrels
• Built for rotary pistols and lever action rifles rather than bolt actions

6

Umarex Emerge Pellet Gun Air Rifle Magazine, 22 Caliber,Black

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
  Umarex

Key specs2

Magazine Capacity

12-round rotary feeder

Ammunition Caliber

.22 caliber pellets

Pros & cons42

Pros

• High-capacity 12-round mechanism reduces reload stops during shooting sessions
• Engineered specifically for feeding .22 caliber air rifle pellets
• Ultra-light polymer housing weighs only 0.05 pounds
• Backed by factory warranty coverage from the manufacturer

Cons

• Listed compatibility focuses strictly on the Umarex Emerge platform
• Rotary housing does not fit standard 8-shot rotary magazine wells

7

Umarex .177 and .22 Caliber Air Gun Cleaning Kit -

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
  Umarex

Key specs2

Caliber Coverage

.177 and .22 caliber airguns

Included Maintenance Tools

• Airgun-safe cleaning rod
• Dedicated bore brushes and mops
• Quick-cleaning bore pellets
• Multi-bit tool driver set

Pros & cons42

Pros

• Dual-caliber support covers both .177 and .22 caliber airgun barrels
• Includes dedicated airgun cleaning pellets, bore brushes, and soft mops
• Bundles a multi-bit driver set to maintain stock and optic mount screws
• Cleans rifled barrels safely without using harsh firearm brush metals

Cons

• Cleaning pellets require manual breach loading during maintenance
• Does not include cleaning accessories for larger .25 or big-bore calibers

8

Genrics 12g Co2 Cartridges Adapter Instead of 88g or 90g

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
  Genrics

Key specs2

Cylinder Conversion

Adapts standard 88g and 90g CO2 rifle chambers to run economical single 12g disposable cartridges.

Shot Output Estimate

15 to 20 shots per 12g capsule

Pros & cons42

Pros

• Converts standard 88g or 90g threaded chambers to take 12g cartridges
• Significantly reduces fuel costs during brief backyard plinking sessions
• Yields an estimated 15 to 20 shots per single 12g disposable cylinder
• Lightweight design adds only 0.18 pounds to the front of the rifle

Cons

• Lower gas volume requires frequent cartridge swaps during long sessions
• Yields noticeably fewer shots per fill compared to standard 88g tanks

9

Umarex Notos Fiber Optic Adjustable Open Sight Set – Front

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

  6.4
• Brand
  Umarex

Key specs2

Sighting Mechanism

Combines high-visibility fiber optic aiming points with rear windage and elevation adjustments.

Dedicated Platform

Umarex Notos Gen 2 PCP (.22 Caliber)

Pros & cons42

Pros

• High-visibility fiber optic inserts deliver clear target acquisition
• Rear sight features fine adjustments for both windage and elevation
• Includes both front and rear open sights for complete rifle mounting
• Weighs just 0.03 pounds to prevent muzzle-heavy rifle balance

Cons

• Engineered specifically for the Notos Gen 2 PCP air rifle platform
• Open sight picture provides no optical magnification for distant targets

10

SQOTDR 12g CO2 /Pump to PCP High Pressure KIT HPA

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

  2.0
• Brand
  SQOTDR

Key specs2

Maximum Valve Pressure

Rated leak-free up to 600 PSI

Supported Airgun Models

• Crosman 2240 (7cm tube configuration)
• Crosman 1377 multi-pump pneumatic
• Crosman 1322 multi-pump pneumatic

Pros & cons32

Pros

• High-pressure valve seal is rated leak-free at pressures up to 600 PSI
• Arrives with primary valve components pre-assembled for quicker setup
• Backed by a one-year manufacturer warranty against hardware defects

Cons

• Sized specifically for Crosman pistol platforms including 2240 and 1377
• Factory instructions prohibit disassembling pre-installed internal parts

Last update on 2026-10-08 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

What CO2 cylinder sizes fit the Umarex 850 M2 setup?

Standard 88g or 90g prefilled CO2 cylinders provide the primary fuel source for the rifle. Prefilled canisters, such as JT Paintball 90G cylinders, thread into the receiver compartment to deliver sustained vapor pressure for extended shooting sessions. Always verify thread compatibility and cylinder clearance inside the stock forend before securing the cylinder cap.

Can I run 12g CO2 cartridges instead of standard 88g or 90g tanks?

Yes, you can install an aftermarket quick-change adapter to run standard 12g capsules. An adapter like the Genrics 12g CO2 adapter uses a single 12g disposable cylinder and features a standard thread adaptor that replaces 80g or 90g CO2 cylinders. This setup lowers your consumable cost during brief shooting sessions, much like running a CO2 BB gun for plinking, without leaving a full high-capacity tank pressurized on your bench.

Which rotary magazines match my rifle caliber?

You must confirm the magazine matches both the rifle receiver design and your specific pellet caliber (.177 or .22). Many rotary clips on the market, such as the Umarex 8-shot .177 rotary magazines, only fit air pistols like the Walther CP88, PPQ, and Beretta M 92 FS. Other multi-shot magazines, such as the Umarex Emerge .22 caliber magazine (part number 2251387), fit specific models like the Emerge rifle (model 2251386). Verify the part number and rifle model compatibility in the manufacturer listing before purchasing spare magazines.

What maintenance tools safely clean the rifle bore and protect internal seals?

Dedicated airgun cleaning gear protects barrel rifling and delicate rubber seals from solvent damage. A package like the Umarex air gun cleaning kit includes a cleaning rod, caliber-specific brushes, mops, a driver set, and felt cleaning pellets for .177 and .22 calibers. Using caliber-matched mops and cleaning pellets clears lead buildup without requiring harsh firearm solvents that degrade internal CO2 valve seals.

Can I connect a high-pressure PCP compressor or fill probe to an 850 M2?

No, the 850 M2 relies on CO2 vapor pressure and cannot connect to high-pressure air hardware. Compressor systems like the Umarex ReadyAIR Gen 2 pump and quick-connect fill probes are built strictly for pre-charged pneumatic platforms like the Notos or AirSaber airguns. Connecting high-pressure air filling equipment to a CO2 system creates hazardous over-pressurization, so check your power plant specifications before buying accessories suited for a tactical air rifle setup.

Can open sights from other airgun platforms install on this rifle?

Receiver dimensions differ across platforms, so factory sights rarely swap cleanly between models. Sights such as the Umarex Notos fiber optic adjustable open sight set are engineered specifically for the Notos Gen 2 PCP air rifle (item numbers 2254852 and 2254871). For the 850 M2, check the receiver rail dimensions to select scope mounts or sighting systems designed specifically for your rifle rail layout.