Type: Non-blowback CO2 BB Pistol and Pellet Pistol.
Manufacturer: Distributed by Gamo.
Model: P-27.
Materials: Plastic & metal.
Weight: 1.5 pounds (681 grams).
Total Length: 7 inches (178mm)
Barrel: 3.75 inches (95mmm) metal non-rifled.
Propulsion: 12g CO2 x 1.
Action: Semi auto NBB, single and double action trigger.
Ammunition Type: 4.5mm steel BBs and .177 Caliber Pellets.
Ammunition Capacity: 16 round (8x8) drop out plastic stick magazine.
FPS: Claimed 430.

Trigger Pull: The trigger pull on the GAMO P-27 NBB CO2 Dual Ammo Pistol is fairly good considering there is no blowback action to pre-cock the hammer. In Single action you can manually cock the hammer for a somewhat lighter trigger pull or you can simply pull the trigger in double action mode which cocks the hammer and cycles the rotary magazine. Both shooting modes are about the same trigger length as the first part of the trigger pull advances the rotary magazine and even in double action the trigger is fairly light but not as light as a true single action trigger.

Accuracy: Let’s get right to the velocity test of the GAMO P-27 NBB CO2 Dual Ammo Shooting 4.5mm Pistol. Gamo does claim up to 430 fps, We are not sure if this is for BB’s or Pellets or maybe even light weight alloy Pellets. In any case we used standard 4.5mm 5.1 grain steel BB’s and around 7 grain lead Pellets for this test. Shooting 3 rounds of 4.5mm steel BB’s through our Chronograph we averaged 342 fps with the three shots recording 349, 342, 334 fps. Switching to lead Pellets we averaged 288 fps with the three recorded shots of 290, 291, 282. The 4.5mm steel BB’s as you can see shot faster than the lead Pellets but this was most likely due to the heavier weight of the lead pellets. We were interested to find out if the .177 caliber Pellets where going to be more accurate in the GAMO P-27 NBB CO2 Dual Ammo Pistol as pellets traditionally are more accurate than BB’s but in the case of the GAMO P-27 the barrel is not rifled so there may be less of a benefit shooting pellets for accuracy purposes? The best way to find out is to try it out so that’s exactly what we did. Again starting with 4.5mm steel BB’s we place one side of the 16 round magazine, so 8 rounds into a fresh pepper target setup 30 feet away. We did use our standard shooting stance of sitting in the back on a stool and placing my hands on a sand bag up front for some stability. We did notice the GAMO P-27 NBB CO2 Dual Ammo Pistol liked to shoot a bit high and to the left but we did get around a 3.5 inch grouping and if we removed two shots that where on the outside of the grouping we would have had closer to a 2 inch grouping. Switching to the .177 caliber Pellet side of the magazine we then were able to get our 8 rounds a bit tighter hitting around a 1.5 inch grouping with most of the shots all within 1 inch of each other. Pellets at least for us where the better choice in terms of accuracy.

Build Quality: The build quality of the GAMO P-27 NBB CO2 Dual Ammo Pistol is good overall. Yes it does have a pretty much full plastic shell, but there is enough metal inside to give it a decent 1.5 pound weight which for a smaller pistol like this makes it feel solid in the hand. There is no blowback action which reduces the amount of moving mechanical parts which will make the GAMO P-27 less prone to wear and possible malfunction so we would expect it to be reliable for a long time.

Realism: The GAMO P-27 NBB CO2 Dual Ammo Pistol as far as we can tell is not an exact copy of a real steel pistol in production but it does look like a real gun for sure. It does have a working safety on the slide which is not your typical low cost airgun switch and the barrel is slightly recessed. The CO2 tab is also hidden fairly well at least when looking from the side, so unless you get close to the pistol you would think it was real for sure. That said some giveaways would be the moulded into the slide ejection port and the screw holes on the right side of the two plastic halves of the airgun, but again close inspection would only really reveal this .

Pros:

• Has a good weight and feel to it, not cheap feeling in the hand.
• Can shoot both BB’s and Pellets.
• Has a single and double action trigger/hammer.
• Uses standard Gamo/Umarex double sided rotary magazines.
• White dot sights for easy sight acquisition.
• Realistic safety lever on the side of the slide.
• Picatinny rail for add on accessories.
• Recessed barrel adds to realism.
• Claimed decent high velocity of 430fps.

Cons:

• Mostly plastic external gun.
• Sights are fixed so no adjustment.
• No blowback action if that is important to you.

Comments: As far as we can remember, we have not seen an Airgun that uses this type of double sided rotary magazine that has not had blowback operation so it will be interesting to see how it shoots. We do expect it to be a bit more powerful than its Blowback counterparts. Overall the GAMO P-27 NBB CO2 Dual Ammo Pistol is well built and solid and looks to have a good trigger on it for either double action quick paced shooting or more slowed down accurate shooting in single action. We will for sure be testing it using both BB’s and Pellets, but I have a feeling both will shoot similarly at the end of the day since the barrel is not rifled giving the pellets less of an advantage.