Type: NBB CO2 BB Pistol. Manufacturer: Distributed by Gamo. Model: P-20. Materials: Plastic & metal. Weight: .97 pounds (439 grams). Total Length: 7.25 inches (184mm) Barrel: 4.25 inches (108mm) metal non-rifled. Propulsion: CO2 x 1. Action: Semi auto NBB, double action only trigger. AmmunitionType: 4.5mm steel BB's. AmmunitionCapacity: 20 round metal stick magazine. FPS: Claimed 400.
Trigger Pull: The trigger pull on the Gamo GP-20 Combat CO2 BB Pistol is the same as pretty much all of the DOA trigger low cost BB Pistols where the trigger has to do all the work. Much of which is pulling back the fairly strong internal hammer spring which in this case is the barrel which protrudes slightly out of the front of the pistol until you reach the release point, and it snaps back hitting the valve and pressurizing the Airgun. This will give you a bit of a finger workout if you are shooting fast and want to empty out the 20 round magazine.
Accuracy: At this point I have not tested or shot the Gamo GP-20 Combat CO2 BB Pistol but I plan on making my Field Test Shooting Video the following week so stay posted for that. I do expect it to perform nearly exactly live every other Airgun made like this, and there are many that essentially have all the same internal components with a slightly redesigned outer shell, so mechanically they are all the same and should shoot about the same. It should get really close to the claimed 400 fps and I expect it to shoot under a 2-3 inch grouping, unless I am having an off day.
Build Quality: The build quality of the Gamo GP-20 Combat CO2 BB Pistol is what you expect from almost all plastic BB Guns of this type. It is not super heavy but that means less can break when dropped on a hard surface. Fit and finish are good and one gripe I have with most of these types of BB pistols built the same way, is that the grips are a bit lose so it can pop off when you pull it back. The Gamo GP-20 Combat’s grips are a lot more solid and this does help make the Airgun feel a bit more confidence inspiring.
Realism: The Gamo GP-20 Combat CO2 BB Pistol from what I can see is not an exact copy of a real steel pistol in production but it does look like a modern semi auto pistol in design. The barrel is slightly recessed, and the CO2 tab is also hidden inside the grips, so unless you get close to the pistol you would think it could be the real deal. That said some giveaways are the moulded into the slide ejection port and the screw holes on the right side of the two plastic halves of the Airgun along with the kind of out of place standard safety switch that looks more like something you would find on a piece of electronics.
Pros:
Very low cost and simple design will make it reliable.
Fit and finish looks decent for an all plastic gun, grip are actually pretty tight.
Picatinny rail for adding accessories like a laser or tac light.
Standard metal stick magazine found in lots of Airguns for cross compatibility.
Right hand screws are very small and less obvious then some other two sided low cost plastic Airguns.
White dot sight up front and fiber optic in the back are easy to see on all backgrounds..
Safety is right above the trigger finger so easy to switch if you are right handed.
Recessed barrel for added realism.
Cons:
Some more metal would have been nice, but typical of a low cost BB shooter like this.
Double action trigger does require some work, so action shooting will be a bit harder.
Not a lot of working parts other than the trigger, safety, and magazine release.
Comments:
I have reviewed many CO2 BB Pistols built exactly like the Gamo GP-20 Combat CO2 BB Pistol, so it is at least for me, not the most exciting Airgun review but I always enjoy the chance to shoot even the most basic of Airguns. I would say the Gamo GP-20 Combat CO2 BB Pistol in this category is one of the nicer options as I feel Gamo stepped up the build quality just a bit, even if it was just to make the grips feel more solid and less prone to popping off when loading CO2. It is a little bit beefier than similar CO2 BB Pistols in this category so maybe not the best for smaller handed individuals but good for someone like me with larger mitts. The price is right for sure and with its simple design, it should perform as expected for a good long time!
Type: Pellet Revolver. Manufacturer: Gamo Model:PR-776. Materials: Mostly metal construction. Weight: 2.2 Pounds (1 kg). Barrel Length: 6 inches Total Length: 11.5 inches. Propulsion: CO2 x1 Action: Revolver single and double action. Ammunition Type: .177 caliber pellets. Ammunition Capacity: 8 rounds per magazine. Max FPS: 400+ fps.
Trigger Pull: The Gamo PR-776 CO2 .177 Caliber Pellet Revolver has your traditional revolver single and double action trigger setup. In double action, the trigger is going to be a bit longer and heavier but it feel fairly smooth with no real friction points and I would consider it to have a medium trigger pull. When you cock the hammer back placing the Gamo PR-776 CO2 .177 Caliber Pellet Revolver in single action, the trigger pull becomes very short with virtually no take-up at all and the weight of the trigger is very light allowing for more accurate shots.
Accuracy: Make sure to watch my Field Test Shooting video for the Gamo PR-776 CO2 .177 Caliber Pellet Revolver where I test out the velocity and accuracy in the Replica Airguns Indoor Airgun Shooting Range. In summary the Gamo PR-776 CO2 .177 Caliber Pellet Revolver shot a little bit hotter than claimed at just over 400 fps using around 7 grain lead pellets. In terms of accuracy with a total of 16 shots the grouping spread out to around 4 inches but I am pretty sure a different pellet choice may have made a difference.
Build Quality: The build quality of the Gamo PR-776 CO2 .177 Caliber Pellet Revolver is pretty good overall. It is mostly all metal with the exception of the grips of course, Fit and finishes looks good, everything feel snug adn tight with the exception of the pistol grips. I feel like the grips could easily move out of place and get caught on something. This is not a problem when shooting, more so when in a holster. The Gamo PR-776 CO2 .177 Caliber Pellet Revolver feels good in the hadn't, nice and solid and with a good weight to it.
Realism: The Gamo PR-776 CO2 .177 Caliber Pellet Revolver is a decent looking Airgun in the style of a traditional revolver, I wouldn’t say it’s an exact replica of any specific revolver in production but it does tick off all the boxes in terms of looking realistic. The weight and feel for now and the Gamo PR-776 CO2 .177 Caliber Pellet Revolver also has a recessed barrel and hidden CO2 crew. The only real giveaway would be the cylinder size as it is a bit smaller than expected and of course is chambered for .177 caliber pellets.
Pros:
Good power over 400 fps using actual lead pellets.
Quicker reloading over shell loading revolvers
More shots per magazine reload, 8 versus 6.
Comes with two metal 8 round magazines.
Traditional single and double action trigger.
White dot front sight with fully adjustable rear sight.
Good weight and feel to it.
Fit and finish look good.
Recessed barrel for realistic looking barrel opening.
Should be able to use a dovetail type scope mount for adding on a red dot or magnified scope.
Cons:
Not a fan of the loose pistol grip setup to access the CO2.
Was hoping to get a bit tighter grouping but may have been a pellet choice issue.
Comments: It was nice reviewing the Gamo PR-776 CO2 .177 Caliber Pellet Revolver as it was a bit different then most of today shell loading revolvers. I like that the Gamo PR-776 CO2 .177 Caliber Pellet Revolver still offered a realistic looking cylinder that the shell loading revolvers have but with the moon clip style magazines that allow for quick adn easy reloading of 8 rounds at a time. The velocity or power of the Gamo PR-776 CO2 .177 Caliber Pellet Revolver was even a bit high than Gamo claims using PBA Platinum pellets since Gamo claims 400 fps using these 5.1 grain lead pellets. My testing with closer to 7 grain pellets yielded fps up and over 400 fps. All the Gamo PR-776 CO2 .177 Caliber Pellet Revolver needs is to be just a little bit more accurate but I feel this may simply be more of a pallet choice, once you find a pellet the Gamo PR-776 CO2 .177 Caliber Pellet Revolver likes I am pretty sure it will deliver accurate shots.
My Table Top Review for the Gamo PR-776 CO2 .177 Caliber Pellet Revolver:
Make sure to watch my Vimeo video for this Comparison Review as I go into a lot of detail about the similarities and difference with each of these CO2 Blowback Pellet Guns.
All of these CO2 blowback pellet guns are made for each company in Japan (I am assuming from the same factory?)
All of the listed Pellet Airguns shoot .177 caliber pellets (Can be Alloy or Lead)
They all have double sided rotary stick magazines that hold 8 rounds on each end for a total of 16 shots per magazine.
All of the Airguns use 12 gram CO2.
All compared pellet guns have Blowback operation.
All of these pellet pistols have single and double action triggers except for the Gamo MP9 which is single action only and needs to be charged on the first shot.
They all have rifled barrels.
Here is where we find some key differences between these CO2 Blowback Pellet Pistols:
I get many question over on my Vimeo Channel, lots of times people asking me which gun is better and in most cases it really comes down to personal preference. But in some situations the comparisons are really close and to be honest it's even hard for me to decide which gun I think is better.
I get asked which one has higher fps, or is more accurate, or has harder blowback recoil... the list goes on. Without actually taking both gun outside and doing a head to head test using the same exact situations, I really can not honestly tell you! So that's exactly what I am going to do. Take some of the most commonly asked about gun comparisons and have a showdown.
Over the next while I will be making a total of five separate videos where I compare the following CO2 BB pistols head to head:
