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The Sig Sauer P320 Spectre Comp CO2 Blowback Pellet Pistol takes the already popular P320 platform and adds a more tactical, competition-inspired look with the Spectre Comp styling. In this Field Test Review, I focused mainly on real-world shooting performance including velocity, accuracy, trigger feel, blowback action, and overall handling. If you want all the detailed specifications and close-up overview footage, make sure to also check out my Table Top Review video for this model.

For this test I used standard Sig Sauer lead pellets, estimated around 7–8 grains rather than lightweight alloy pellets, giving a more realistic idea of what shooters can expect during normal use. Despite some chronograph frustrations during testing, the pistol delivered fairly consistent velocities once everything settled down. Average readings for my five shots through the Chronograph came in at 270 FPS, with highs reaching about 286 FPS during the initial shots and my slowest shot was 260 FPS. Considering the cooling effect common with CO2-powered airguns, the consistency was actually quite respectable for a blowback pellet pistol.

Accuracy testing was performed at 30 feet using a standard paper target. I fired a full 10-shot group and overall results were solid for a blowback pellet pistol with a higher-capacity belt-fed magazine system. Most shots grouped within roughly 2 inches, although the full spread opened up closer to 2.5–3 inches when including a couple lower shots likely caused by slight velocity variation from CO2 cooldown. Horizontal consistency was very good, with only a slight tendency to drift left. For a rapid-fire capable CO2 pistol with blowback, the accuracy was more than acceptable.

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One thing worth mentioning is the trigger feelof the Sig Sauer Spectre Comp. Since the trigger system also advances the pellet belt during firing, there is naturally a bit more friction and a slightly longer pull compared to some rotary magazine designs. Even so, the trigger never felt excessively heavy or unpleasant. Rapid follow-up shots were still easy to manage, and the realistic blowback action adds a lot to the shooting experience.

The 20-round belt-fed magazine system is one of the biggest advantages of the Spectre Comp over many traditional rotary magazine pellet pistols. Instead of dealing with smaller 8-shot or flip-around style magazines, you get a much more enjoyable shooting session with fewer reload interruptions. Combined with the realistic weight, solid balance, and satisfying blowback recoil impulse, this pistol ends up being a very fun and practical option for target shooting and action-style plinking.

If you are looking for a realistic training-style pellet pistol that combines blowback action, higher magazine capacity, and solid handling characteristics, the Sig Sauer P320 Spectre Comp CO2 Blowback Pellet Pistol is definitely worth checking out. It offers a nice balance between realism and shooting fun while still delivering respectable accuracy and consistency for casual target shooting.

You can find more information about Airguns, BB guns, Pellet guns, Airsoft guns, Blank guns, and accessories over at Replica Airguns Canada and Replica Airguns US.

• Buy the Sig Sauer P320 Spectre Comp CO2 Blowback Pellet Pistol in Canada

• Buy Sig Sauer P320 Blowback Pellet Pistol in the US

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First Look & Overview

In this table top review, taking a detailed look at the Sig Sauer P320 Spectre Comp CO2 Blowback Pellet Pistol, a modern, competition-style airgun replica that closely mirrors its real steel counterpart. This model stands out with its aggressive styling, compensated muzzle, and optics-ready slide, making it one of the more premium-looking pellet pistols currently available.

This is a pellet-only airgun with blowback action, designed more for realism and handling than raw velocity. If already familiar with the Sig Sauer M17 pellet pistol, this one shares a lot of mechanical similarities, including the magazine system.

Specifications

• Caliber: .177 Pellet

• Action: Semi-auto, blowback

• Magazine: 20-round belt-fed rotary system

• Power Source: 12g CO2 (tool-free cam lever system)

• FPS: Claimed 340 FPS

• Weight: ~2.3 lbs

• Overall Length: 8.5 inches

• Barrel Length: 4.6 inches (rifled)

• Construction: Metal slide, polymer frame

• Sights: Fixed white dot front and rear

• Optics Ready: Yes (SIG Air RMR compatible)

• Rail: Picatinny accessory rail

• Safety: Ambidextrous manual safety

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Build Quality & Design

The Sig Sauer P320 Spectre Comp CO2 Blowback Pellet Pistol delivers a solid mix of metal and polymer construction. The metal slide gives it realistic weight and feel, while the polymer frame helps keep things balanced. At around 2.3 pounds, it has a substantial presence in hand without feeling overly heavy.

The grip features enhanced texturing along with a flared magwell, adding to both aesthetics and usability. The slide includes light porting and is optics-ready, allowing for easy installation of a SIG Air RMR red dot.

One standout visual element is the compensated muzzle, which adds to the competition-style look. However, it also impacts field stripping, you’ll need to remove it to fully disassemble the slide.

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Magazine & CO2 System

This pistol uses a 20-round belt-fed rotary magazine, which is housed within a drop-out mag body. Loading is straightforward:

• Remove the rotary belt insert

• Load pellets into each chamber

• Reinsert into the mag

CO2 is loaded using a tool-free cam lever system, which is fast and convenient compared to traditional screw-in designs.

Important note: the magazine needs to be firmly seated. A light insertion may not lock it properly, and due to the weight, it could fall out if not fully engaged.

Also worth noting, while the outer mag housing has some polymer components, the internal structure is mostly metal. Still, avoid dropping it on hard surfaces.

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Handling & Controls

• Ambidextrous safety works from both sides, though visual indicators are only clearly marked on one side

• Trigger feels closer to double-action due to the rotary magazine indexing

• Slide cycles with blowback but does not lock back when empty

• Takedown lever is present, but full disassembly is limited by the compensator

The trigger has a solid feel and requires deliberate pull due to the indexing mechanism. This is normal for belt-fed pellet systems.

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Sights & Optics

The pistol comes with fixed white dot sights, which are effective for quick target acquisition. However, they are not adjustable.

For those wanting more precision, the pistol supports SIG Air RMR optics, replacing the rear sight with an included plate.

Performance Expectations

The claimed velocity is 340 FPS, which is typical for blowback pellet pistols. Expect slightly lower speeds with lead pellets (recommended) compared to alloy pellets.

Blowback operation will also consume more CO2 than non-blowback models, trading efficiency for realism.

If looking for a performance reference, similar results can be expected to the Sig Sauer M17 pellet pistol due to shared internals.

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Pros

• Excellent replica accuracy of the P320 Spectre Comp

• Realistic blowback with metal slide

• Good weight and balance (~2.3 lbs)

• 20-round high-capacity pellet magazine

• Tool-free CO2 cam lever system

• Rifled barrel optimized for pellet shooting

• Optics-ready (SIG Air RMR compatible)

• Flared magwell and enhanced grip texture

• Picatinny rail for accessories

• Magazine compatibility with M17

Cons

• Lower FPS compared to non-blowback pellet pistols

• Higher CO2 consumption due to blowback

• Fixed (non-adjustable) sights

• Pellet-only (no BB capability, though this protects rifling)

• Slide does not lock back when empty

• Field stripping requires compensator removal

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Final Thoughts

The Sig Sauer P320 Spectre Comp pellet pistol is a strong option for anyone prioritizing realism, handling, and modern styling over raw power. It delivers a premium look with solid functionality, especially for training, backyard shooting, or collectors wanting a high-end replica.

While not the most powerful pellet pistol available, it excels in design, usability, and realism, especially if already a fan of the P320 platform.

For those in Canada, availability may already be live, with US availability likely to follow.

• Buy the Sig Sauer P320 Spectre Comp CO2 Blowback Pellet Pistol in Canada

• Buy Sig Sauer Airguns in the US

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A surprise “tiny box” delivery turned out to be a solid addition to the lineup, the SIG Sauer P320 Spectre Comp Pellet Pistol. Despite the small packaging, this is a full-featured CO2-powered pellet pistol with a strong focus on realism and competition-style design.

Right out of the box, the Spectre Comp feels substantial, coming in at around 2.29 lbs with a metal slide and polymer frame. It features a semi-auto blowback action and uses a 20-round belt-style pellet magazine, typical of SIG’s higher-capacity pellet systems.

Key highlights include:

• CO2 powered (.177 caliber pellet)

• Blowback action (semi-auto)

• 20-round belt magazine

• Approx. 340 FPS velocity

• Optics-ready slide (RMR plate compatible)

• Ambidextrous safety and controls

• Flared magwell for faster reloads

• Picatinny accessory rail

• Field-strip capable design (with compensator removal)

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The pistol leans toward a competition-style setup, featuring a skeletonized trigger, ported slide, and a compensated front end for aesthetics. While the slide does not lock back (common for belt-fed pellet systems), the blowback adds to the overall shooting realism.

Loading is straightforward thanks to the tool-free CO2 system and two-piece magazine design. The trigger pull feels more like a double-action due to the belt cycling, which is typical for this platform.

Overall, the P320 Spectre Comp CO2 Blowback Pellet Pistol looks to be a well-built, feature-rich option for those wanting a realistic training pistol with added competition styling. A full tabletop review and field test shooting results will follow once it’s put through proper testing.

• Buy the SIG Sauer P320 Spectre Comp Pellet Pistol in Canada

• Buy Sig Sauer Airguns in the US

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The Sig Sauer ASP P320 CO2 Blowback .177 Caliber Pellet Pistol is a really nice evolution to the already existing line of Sig Sauer ASP Pellet Pistols. The 30 round belt fed pellet magazine is what really sets it apart from the Sig ASP P250 and Sig ASP P226 which both share the traditional double sided 8 round rotary pellet magazines found in other CO2 pellet pistols like the Umarex PX4 and ASG CZ P-09 Duty.

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The big question I had was how is the trigger going to feel and is a 30 round belt magazine going to be reliable? Will other aspects of the Sig Sauer ASP P320 CO2 Blowback .177 Caliber Pellet Pistol function and perform like its rotary magazine brothers?

So I figured I would put the Sig Sauer ASP P320 CO2 Blowback .177 Caliber Pellet Pistol up against both the Sig ASP P250 and P226 and see how they all faired against each other.

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During my Chronograph feet per second shooting test I compared all three blowback pellet pistols shooting five rounds from each of them using a brand new CO2 and Sig Sauer 5.25 grain Match Ballistic Alloy Pellets. It was a close race with the Sig ASP P250 averaging 413 fps, the Sig ASP P226 just under with a 409 fps average and the Sig ASP P320 coming in a very close third at 405 fps. Only about 8 fps separating all of them!

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Moving on to the target portion of my testing. As per my standard Field Test Shooting Reviews I setup my paper targets about 30 feet from my rested shooting position and since the ASP P250 and P226 both have 8 rounds per side rotary magazines I decided to shoot an 8 round grouping with all three Sig ASP pellet pistols. It was really close and perhaps one could say most of the variability was because of the human factor. All three CO2 Blowback Pellet Pistols shot about 2 inch groupings with perhaps one or two outliers, again most likely my fault :) I would say the Sig Sauer ASP P250 was perhaps the most accurate with the tightest of the three groups and also the most centered. The Sig Sauer ASP P226 and Sig Sauer ASP P320 where both a close second with both of them shooting just a tad left on target but pretty close to the center.

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What about that Sig Sauer ASP P320 CO2 Blowback .177 Caliber Pellet Pistol trigger and belt fed magazine? The trigger actually felt great, much lighter than I was expecting and I did not have one pellet feed error during my entire testing. At the end of the day all three Sig ASP pellet guns performed about the same, but I have to say having 30 rounds at your disposal without having to reload or rotate the stick mag really makes the Sig ASP P320 stand out and perhaps make it the winner in a very close contest.