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SIG Sauer ASP20, Synthetic

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  • Code: AGD-45988983 · .22 · 841 fps
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With their first introduction to the break barrel market, SIG has knocked it out of the park with the ASP20. It’s perfect for extremely accurate backyard shooting and pest control. Chambered in both .177 and .22 caliber, each versions piston is charged accordingly, to send rounds downrange at the optimal velocity. The cocking effort is very manageable at around 33 lbs and each time, you’re good for anywhere between 1020 to 830 fps, depending on your caliber. The trigger is probably our favorite part about this gun, it is a two stage adjustable Matchlite trigger that is extremely smooth, especially considering we’re talking about a break barrel. The accuracy is undeniable as well, as we were getting groups as small as a third of an inch at 35 yards with our demo. If this rifle is any indication about what SIG will bring to the break barrel market in the future, it will be only a matter of time before they dominate the break barrel industry.

SIG Sauer ASP20 Gas-Piston Breakbarrel Air Rifle

  • Gas-Piston
  • Breakbarrel
  • Weaver/Picatinny Rail
  • Black Synthetic Stock
  • Integrated Suppressor
  • 2-Stage Adjustable MatchLite® Trigger, 2.5-4 lbs trigger pull
  • GlideLite™ Cocking Mechanism
  • Wedge Lock Breech System eliminates barrel droop 
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  • ManufacturerSIG Sauer
  • Caliber .22
  • Velocity 841 fps
  • Condition New
  • Ammo Type Pellets
  • Action Break barrel
  • Barrel Style Rifled
  • Fire Mode Single-shot
  • Gun Weight 8.50
  • Overall Length 45.60
  • Barrel Length 13.80
  • Loudness 3-Medium
  • Magazine Capacity 0
  • Mechanism Gas-piston
  • Rail Weaver/Picatinny
  • Safety Manual
  • Front Sights none
  • Rear Sights none
  • Shots per Fill 1
  • Trigger Adjustability Two-stage adjustable
  • Trigger Action 0
  • Use Small game hunting/target practice
  • Warranty 5-year limited warranty
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Average Customer Review
4.57 Reviews
57% (4)
29% (2)
14% (1)
0% (0)
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By ElroyUSANovember 5, 2020

One in approximately 3327 Rifles I bought the .177 version about a month ago for my sons birthday. This is the air rifle he wanted after doing loads of research and reading the reviews of which there appeared to be no downsides. This rifle came from a local store was in a sealed brown box with the SIG logo. Therefore, to our knowledge no one ever touched it but my son and I. The very first person to touch it was my son when he opened his gift, the smiles said it all. Today we put scope on to fire it for the very first time, wechecked it over nothing loose and no rattles. While cycling it in operation and scope sighting a major problem occurred after the first 10 pellets. On pellet 11 when pulling the trigger it would not fire (acted as if it were still in safe mode);after checking everything and re-engaging barrel it fired. We then put pellet 12 in the breach and once again after it would not fire and we could hear something inside. Cleared pellet took it back to store for replacement

Made in USA, Appears to be a Quality Air Rifle with Great Modern Look. Even with current issue with first ASP20 we agree it is worth the purchase price and once the .22 cal is in stock we intend to get one with the wood stock.

Currently not sure, need to take replacement unit out and see if issue with first unit was a fluke. Fingers crossed the issue is a one off but time will tell. The local store had three of these units all with the last four of the serial numbers in the 3300’s. The replacement unit is #3327.

By JayJuly 7, 2020

Kinda new to airgunning-impressed so far-with airgundepot-ordered gun, then realized I had no pellets!-so next day ordered pellets-maybe coincidence -but both arrived together!!! Awesome! Will update once i shoot-(but extremely excited to shoot! & then I’ll update my review!)

By MarkUSAJune 27, 2020

It's very accurate and I love the trigger. I like everything about the gun it's a 22 cal.


By JamesUSAMay 31, 2020

I own this in Wood stock. Equip with a Sig Sauer Sierra3 BDX 4.5-12x 44mm Scope. A Barrel Mount Picatinny rail. Awesome Accuracy. Shoots .22 cal 14.3 gr Pellets @ 822 FPS, 14.5 gr Pellets@ 802 FPS, and 19.2 gr Pellets at 691 FPS.

Bit heavy, being Wood Stock.

By JamesUSAMay 11, 2020

Accuracy is no problem!! I just got the scope on, sighted it in and then punched 5 holes in a 1/2" square bullseye at 25 yards. The trigger is sensitive, and I had to adjust myself to the little effort it takes to engage. If you are looking for an accurate break barrel, look no further. I am using a Hawke Airmax 4-12x50 AO. What a combination

By JamesDecember 23, 2019

Buyers need to have a realistic expectation about this over-hyped trigger. The adjustment is nothing like touted, it has much travel. It is light, but you can’t predict when in the long path of pulling that it will go. They should have also made it metal, plastic triggers are, just cheap.

Other than trigger, it is built solid and groups nicely. I was amazed at how some pellets performed over others. I would have paid $100 more for a good trigger.


By DouglasUSASeptember 11, 2019

Few times in life do you make a purchase and it blows you away once you get your hands on it. While waiting months for this rifle to arrive, had the opportunity to watch and read everything there was to know about this new break barrel. It still blew me away in just about every respect. Unbelievable accuracy for this solid well built and designed weapon. If this is Sig's first attempt at a break barrel, I cant wait to see what comes next!

Just about Everything

Position of safety is a bit cumbersome.

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Does it come with sig sauer scope?

asked Jerry from USA

What would be the best scope at an affordable price for it?

asked Peter from USA

absolutely agree about a UTG. I have a UTG bugbuster $100 scope, and it does a great job up to about 100 yards

Rich from USA

Look at the Leapers/UTG scopes.

Mark from USA

Are the already lugged for a carry strap?

asked Scott from USA


Mark from USA

when can we get one?

asked John Myers

Best ammo for the 22 cal

asked Mike

Best scope for this rifle ASP20

asked Brain Wiggs
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