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.

Here are some of the main Similarities when comparing the Sig Sauer P250 & P226 - Umarex PX4 Storm - Gamo P25 & MP9:

• 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:

The FPS Velocity for each Airgun:

• Gamo P-25 - 450 BPA Platinums.

• Gamo MP9 - 450 BPA Platinums.

• Umarex PX4 Storm - 380.

• Sig Sauer P250 - 400 with 5.25 grain.

• Sig Sauer P226 - 400 with 5.25 grain.

The weight of Each Pellet Gun:

• Gamo P-25 - 1.7 pounds.

• Gamo MP9 - 3 pounds.

• Umarex PX4 Storm - 1.6 pounds.

• Sig Sauer P250 - 1.45 pounds.

• Sig Sauer P226 - 2.35 pounds.

The Barrel Length for each Air Pistol:

• Gamo P-25 - 4.5 inches.

• Gamo MP9 - 6.5 inches.

• Umarex PX4 Storm - 4.5 inches.

• Sig Sauer P250 - 4.75 inches.

• Sig Sauer P226 - 4.75 inches.

The Main Build Materials for each Pellet Pistol:

• Gamo P-25 - Metal slide with plastic frame.

• Gamo MP9 - Plastic outer shell with lots of internal metal parts.

• Umarex PX4 Storm - Metal slide with plastic frame.

• Sig Sauer P250 - Metal slide with plastic frame.

• Sig Sauer P226 - Metal slide and frame. 

Is the Ejection Port Cut Out?

• Gamo P-25 - Yes.

• Gamo MP9 - No.

• Umarex PX4 Storm - Yes.

• Sig Sauer P250 - No.

• Sig Sauer P226 - No.

Is it a Replica of a Real Steel Gun?

• Gamo P-25 - No.

• Gamo MP9 - Yes.

• Umarex PX4 Storm - Yes.

• Sig Sauer P250 - Yes.

• Sig Sauer P226 - Yes.

Installment number 2 of my Head-to-Head Airgun comparisons. In this video I compare the replica Umarex Beretta PX4 Storm CO2 Blowback Pellet Pistol versus the Gamo PT-85 CO2 Blowback Pellet Pistol. Both are very similar mechanically and use very similar rotary magazines combined with single action hammers and very heavy blowback.

Make sure to checkout my other posts for my Umarex Beretta PX4 Storm and also the  Gamo PT-85.

Watch the video below to see the Beretta PX4 Storm CO2 Blowback Pellet Pistol go head to head against the Gamo PT-85 CO2 Blowback Pellet Pistol in both a test of the feet per second performance and accuracy shooting at 30 feet using a semi rested position.

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