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Mark-I High Power Airsoft Gas Pistol w/ Metal Hopup by KJW / ASG

ID: 24078 (GP-KJW-MK1)
4.6 stars, based on 32 reviews
Mark-I High Power Airsoft Gas Pistol w/ Metal Hopup by KJW / ASG
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
The KJW MK-I is an exceptional Airsoft hand gun with optimized gas usage, portability, power and range. It is arguably by most as the most effective side-arm for outdoor environments because of the portability (it is fairly light weight and compact to be put away when operating your primary). Yet, it outputs an whopping 350~450+ FPS for the range and power you need to backup your primary. The KJW MK-I is also among the most durable pistol ever constructed with an extremely high gas efficiency.

Dimensions: 10" x 5.5" x 1.6lbs (248mm long)
Range: ~100+ feet
Muzzle Velocity: 350~450 FPS (Measured with .20g BB's and Green Gas)
Gas: Green Gas / Propane Adapter
BB: 0.23g or heavier Matrix & Compatible High Grade bb recommended.
System: Gas non-Blowback.
Hopup: Yes, Adjustable / New metal hopup
Firing Mode: Semi-Automatic.
Package Contents: Gun, Magazine, Manual
Manufacture: KJW (Factory Direct) / ASG (US Distribution)
Magazine Capacity: 17rds

Spare Magazines Available @!


  • Superb FPS / Range and accuracy.
  • High gas efficiency non-blowback design.
  • Superb portability with compact frame.
  • High Strength Polymer Barrel
  • Integrated fixed Front and Rear Sights
  • On-frame Integrated Safety Switch
  • On-frame detachable magazine.
  • Efficient, Non-blowback Design
  • Newest version with metal hopup.
  • 1:1 True to scale replica.

ASG Limited Manufacturer Warranty:

This airsoft pistol is backed by a 3 month limited warranty from ActionSportGames. Should this airsoft pistol fail due to a defect in material or workmanship during the warranty period, ActionSportGames will repair or replace it, free of charge. Please see the included warranty card for warranty details.

FPS Range: 350-450

32 Customer Reviews

(Write a review)

by Chase P. on 04/19/2014
"I've had this product for over 3 years+ I've never had a problem with it and i just had its fps retested when I had this last trip to the Superstore it still shoot a solid 410fps of course the first 2 shots are much hotter coming out at around 420+ anyway lets get down to the pros and cons.

-Solid build
-easy disassembly/re assembling
-easy self fixes
-very accurate
-very durrible
-hits hard (kids won't cheat it hurts to bad)

-might need some tighting later down the line when it gets older

be safe, have fun, play hard
by Myles N. on 07/16/2013
"I guess for the AMAZING price this gun is good but in terms of quality... no. It is plastic and it leaks a ton of gas so you have to be very careful how you treat it. On top of this the trigger is really hard and inconvenient to pull so brace yourself for that. The accuracy sucks too. The biggest up for me is the velocity, sweet design, and the price. If it weren't for the 60 dollar price I'd give it a 2 out of 5
by Mason R. on 05/25/2012
"Well this gun is one heck of a deal. I have had mine for a month and it shoots beautifully

Great price
Super high fps. (423 with .23)
Easy to do a pistols match with
People underestimate the power of it
Super easy to strip and upgrade

Trigger pull is long and heavy
Too hot for most fields (just sneak it in in a holster)
Inaccurate 50% of the time with. 23
Hopup is nearly impossible to adjust (use heavier bbs or buy a new hopup)
Mine didn't come with a hopup adjustment tool

Overall: This is a great gun. The pros outweigh the cons for me.

Side note: I am working on a lighter trigger for this. I will post results in the forums.

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