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TNT APS-X Hop-Up System Airsoft KWA MP7 Gas Blowback Inner Barrel Retrofit Kit (Length: 170mm)

ID: 77713 (BRL-TNT-MP7-170)
T-N.T. Studios859188777132KWA-MP7 RETROFIT KIT 170mm77713
5.0 stars, based on 1 reviews
TNT APS-X Hop-Up System Airsoft KWA MP7 Gas Blowback Inner Barrel Retrofit Kit (Length: 170mm)
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T-N.T. Studios



  • 6.02mm tightbore inner barrel improves accuracy, range and muzzle velocity
  • Anodized aluminum alloy barrel collar reduces inner barrel wobble
  • Designed to improve the power, accuracy and range of your KWA MP7
  • Includes TNT T-HOP bucking for KWA-MP7
  • 14mm negative threaded barrel
Length: 170mm
Compatibility: KWA MP7 series gas blowback Airsoft rifles
Material: Aluminum Alloy

Manufacturer: TNT Airsoft / RA-Tech

About T-N.T. Studios

The T-N.T. vision has always been the same: to offer a better solution to all airsoft players. All T-N.T. Studio's products are cutting edge, patented products designed with extreme precision. Our mission has always been to improve the experience of all airsoft players.

1 Customer Review

(Write a review)

by Elliott S. on 09/22/2019
"Unless you have a mock suppressor attached to your KWA H&K MP7A1, I would not recommend anyone to upgrade their inner barrel with this length as it will expose the long inner barrel. In this case, I recommend either the same one as this product where the length is 170 millimeter or the Maple Leaf Crazy Jet Barrel Set (180 millimeter). I upgraded my inner barrel with this length since I attached a mock suppressor to my MP7A1. Prior to this upgrade, my accuracy was totally off. Each time I shoot, the BB's frequently strike the inside of the mock suppressor shifting the BB's in all directions instead of moving straight from my intended aim. Once installed, it improved the accuracy, fps, range. The BB's no longer strike the inside of mock suppressor thanks to the tip of extended inner barrel being one inch below the tip of mock suppressor.

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