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Type: Pellet Pistol
Manufacturer: Sig Sauer
Model: ASP P320
Material: Metal and plastic
Weight: 821 g (1.8 lb)
Length: 244 mm (9.6 in)
Barrel: 121 mm (4.75 in), rifled, steel
Power Source: 12 g CO2 x 1
Action: Semi-automatic, double action only, blowback
Ammo Type: .177 caliber pellets
Ammo Capacity: 30 rounds
FPS: 430
Buy the magazine: SIG1047
Trigger Pull: A lot better than I thought it was going to be considering each time you pull the trigger it has to advance the 30 round belt-fed magazine and cock the internal hammer since it's double action only. The blowback operation is only for show and feel since it does not cock the hammer for a single action type trigger pull. You can expect a fairly long trigger pull because it is double action only, but overall it's not too heavy.
Accuracy: First during our Chronograph feet per second shooting test we 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! Moving on to the target portion of our testing. As per our standard Field Test Shooting Reviews we setup our 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 we 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 our fault :) We 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.
Build Quality: The Sig Sauer ASP P320 is heavier than the P250, making the Sig Sauer P320 feel more solid in the hand. The P320 has a metal slide and polymer frame, similar to the real steel version which gives it realistic weight, balance, and handling. Sig claims that their entire ASP line of pellet guns is life tested for 15,000 shots so you know this gun is going to last and provide years of shooting fun. The fit and finish seem really good. So far, no real paint or finish problems and mechanically everything is operating as it should.
Realism: A very close replica of the real steel Sig Sauer P320. The hammer, slide catch release, and take-down lever are purely for show with the hammer being molded into the slide and frame. One slight disappointment for me is when a gun does not have a cut out ejection port, that is also the case with the other ASP Sig Sauer airguns like the P226 and P250, but it does not take away from the shooting fun in any way.
Pros:
Cons:
Comments: The Sig Sauer ASP P320 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. 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 ASP P320 stand out and makes it the winner in a very close contest. Overall, the new Sig Sauer ASP P320 Pellet Pistol looks to be an upgrade to the P250 in terms of improved weight and a higher capacity magazine.