5 Best Sig Sauer Mpx Gen 2 of 2026 For Backyard Drills

1

SIG SAUER MCX Gen 2 .177 Caliber 30rd CO2-Powered Semi-Auto

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• ARS Mark

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  9.2
• Brand
  Sig Sauer

Key specs2

Platform Profile

This model replicates the longer MCX carbine footprint rather than the compact MPX design. Verify barrel clearance and handling preferences if your training drills require a submachine gun setup.

Included Equipment

• MCX Gen 2 .177 caliber semi-automatic air rifle
• 30-round pellet magazine
• CO2 cylinders and shooting pellets sold separately

Pros & cons33

Pros

• Delivers full rifle ergonomics for shooters practicing drills on the longer MCX carbine platform
• Semi-automatic action with a 30-round magazine allows rapid firing sequences without manual cocking
• Uses standard .177 caliber pellets for accessible target practice and plinking

Cons

• Uses the longer MCX rifle frame rather than the compact MPX submachine gun layout
• Standalone package omits the required 90g CO2 cylinders and pellets needed to shoot immediately
• Does not include auxiliary optics or starter ammunition in the carton

2

SIG Sauer MPX .177 Cal CO2 Powered Air Rifle with

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  8.7
• Brand
  Sig Sauer

Key specs2

Starter Bundle Kit

• Sig Sauer MPX .177 CO2 air rifle
• Red dot training optic
• Two 90-gram CO2 cylinders
• 500-count lead pellet pack

Target Sighting System

Bundled red dot optic

Pros & cons42

Pros

• Includes two 90-gram CO2 tanks and 500 lead pellets so you can start backyard drills immediately
• Bundled red dot optic provides fast target acquisition right out of the box
• Genuine MPX submachine gun styling offers a compact training profile
• Semi-automatic 30-round magazine cycling supports rapid-fire tactical practice

Cons

• Bundle configuration adds cost if you already own compatible optics, pellets, or CO2 tanks
• Specific red dot specifications and battery requirements must be verified on the package

3

Sig Sauer MPX Air Rifle, MPX GEN 2, .177 Caliber

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  8.0
• Brand
  Wearable4U

Key specs2

Shooting Readiness

Ready to fire with included CO2 and 500 pellets

Bundle Components

• Sig Sauer MPX Gen 2 semi-automatic air rifle
• 30-round .177 pellet magazine
• Wearable4U 2-pack 90g CO2 tanks
• 500-count airgun pellets

Pros & cons32

Pros

• Comes bundled with two 90-gram CO2 tanks and 500 pellets for immediate backyard shooting
• Features the authentic Gen 2 MPX platform with semi-automatic 30-round capacity
• Lets you supply your own preferred optic or run standard sights without paying for an unneeded red dot

Cons

• Does not include a bundled red dot optic, requiring open sights or a separate optic purchase
• Specific pellet shape and weight inside the 500-count pack must be verified for smooth feeding

4

SIG SAUER MPX Gen II Pellet Air Rifle

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  7.7
• Brand
  Sig Sauer

Key specs2

Out of Box Requirements

This listing contains the base MPX Gen II rifle and magazine only. You must obtain 90-gram CO2 cartridges and .177 caliber pellets separately before running drills.

Exterior Finish

Standard Black

Pros & cons32

Pros

• Authentic MPX Gen II design delivers a compact, realistic handling profile for tactical drills
• Semi-automatic 30-round repeating action provides uninterrupted target shooting
• Avoids bundle markups if you already possess 90g CO2 cylinders, optics, and .177 pellets

Cons

• Standalone rifle only, meaning you cannot fire it out of the box without buying CO2 and pellets
• Sighting accessories or optics are not included with the bare rifle package

5

SIG SAUER MPX Gen II FDE Pellet Air Rifle

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  7.5
• Brand
  Sig Sauer

Key specs2

Aesthetic Treatment

Flat Dark Earth (FDE)

Operating Setup

Requires separate acquisition of 90g CO2 tanks and .177 pellets to shoot. The rifle features the Gen II MPX platform with 30-round capability in an FDE finish.

Pros & cons32

Pros

• Flat Dark Earth (FDE) tactical finish provides distinctive two-tone styling compared to standard black
• True MPX Gen II compact layout maintains authentic handling for close-quarters drills
• Semi-automatic 30-round magazine cycling facilitates rapid-fire backyard training sessions

Cons

• Arrives as a bare rifle with no 90g CO2 tanks, pellets, or optics in the box
• Standard factory packaging does not include extra spare magazines or accessories

Last update on 2026-10-07 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Does the base SIG SAUER MPX Gen 2 package include CO2 tanks and pellets?

No, base listings like the standalone SIG SAUER MPX Gen II Pellet Air Rifle include only the air rifle itself, leaving out fuel and ammunition. If you choose an unbundled setup, you will need to purchase .177 caliber pellets and 90-gram CO2 cylinders separately before you can shoot. Full bundles solve this out-of-the-box delay by pairing the semi-automatic airgun with a two-pack of 90-gram CO2 tanks and a pack of 500 lead pellets.

What is the difference between the MPX Gen 2 and the MCX Gen 2 air rifles?

The primary distinction is platform styling and frame length, as the SIG SAUER MCX Gen 2 uses a longer rifle profile while the MPX Gen II uses a compact submachine gun format. Both share a CO2-powered semi-automatic action that fires from a 30-round magazine chambered for .177 caliber pellets. If you want rapid handling for close-range target drills, the shorter MPX layout fits tight spaces, but you can also look into alternative tactical air rifle setups if you prefer standard carbine dimensions.

Is the MPX Gen 2 red dot bundle worth choosing over standard sights?

It depends on whether you already own a dedicated rail optic for fast target acquisition. Selecting a bundle that packages the MPX .177 caliber rifle with a factory red dot, two 90-gram CO2 tanks, and 500 lead pellets gives you an immediate aiming solution without shopping for extra mounts. But if you already have an optic on your workbench, choosing the bare MPX Gen II model prevents you from paying for duplicate accessories.

What ammunition does the SIG SAUER MPX Gen II 30-round magazine use?

The magazine is engineered strictly for .177 caliber pellets. Manufacturer bundles supply packs of 500 lead pellets to match the feeding requirements of the 30-round semi-automatic belt mechanism. The platform is not listed for steel BB ammunition, so shooters interested strictly in round steel shot should check dedicated CO2 powered training platforms rather than running unsupported ammo through an MPX barrel.

What size CO2 tanks power the MPX Gen 2 semi-automatic air rifle?

The rifle is built to run on 90-gram CO2 tanks, which provide the gas volume required for rapid-fire semi-automatic cycling. Bundles typically supply a two-pack of 90gr cylinders alongside the rifle to support uninterrupted shooting drills in 2026. Always check the package description before purchasing so you know whether to order 90-gram cylinders on the side.

What color finishes are available for the SIG SAUER MPX Gen II?

The MPX Gen II is available in both standard Black and Flat Dark Earth (FDE) synthetic finishes. The SIG SAUER MPX Gen II FDE Pellet Air Rifle delivers a two-tone appearance, while the standard Gen 2 Black offers traditional uniform styling. Both color variants share the exact same .177 caliber semi-automatic mechanism and 30-round magazine capacity.