Airsoft Upgrades

T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel )

Brand: T-N.T.Category: GBBR Buckings & Nubs1 retailer

Price: $107.76 – $124.34 — In stock at 3 retailers.

Prices last checked July 30, 2026 across 1 retailer.

Fit for KWA-M4 / LM4 / MASADA / MEGA AR10 AR15 / TAR-21 / HK416 / HK417 GBBR Simplify the original complex components. The inner barrel can be used T-N.T. System all series of precision Air-cushion inner barrel series, has been changed to a general specifications , to rid itself of special specifications. Change to using two jimi screws to fix the inner barrel, improve the original inner barrel shaking issues , improve the stability of shooting. T-N.T. Retrofit kits : HOP-UP chamber is anodized aluminum , adjustment knob made by steel , improve the original breakable problem. Adjustment range from the original approximately 0.3mm to 1.0~1.2mm. May correspond 0.3g ~0.43g BB , more options more funs !! Before shipping, completed by the T-N.T. STUFF assembly adjustment. Only need to remove the outer barrel's 2 fixing screws → placed in T-N.T. Retrofit Kit → lock fixing screw back → in accordance with the kind of BB to adjust the amount of HOP-UP → Complete !! All products are recommended to have DIY ability to make fine adjustments and modifications. Before the modify, recommended to check and exclude the original issues to achieve the best results, or commissioned by the store to modified. Replacement of kits does not mean that can solve all the original parts of the issues, sometimes still have to modify the other components to achieve the best performance.

T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) price comparison: the lowest price is $107.76 at WGC Shop, the highest is $124.34, and the median across 6 tracked listings is $117.70. Comparing retailers can save up to 13% ($16.58) versus the highest-priced listing.

Powerplant: GBBR

Fits models: KWA LM4

Compatible with: M4/AR, GBBR

Which buckings fit GBBR? Compare fitment & degrees →

Where to buy the T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ): prices at 6 retailers

  • WGC Shop: $107.76 — Out of Stock
  • WGC Shop: $107.76 — Out of Stock
  • WGC Shop: $114.39 — Out of Stock
  • WGC Shop: $121.01 — In Stock
  • WGC Shop: $121.01 — In Stock
  • ...and 1 more retailer listings compared on this page.

Frequently asked questions about the T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel )

How much does the T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) cost?
The T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) ranges from $107.76 to $124.34 across 1 retailer. The lowest current price is at WGC Shop. Prices are updated regularly from each store's live catalog.
Where can I buy the T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel )?
The T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) is currently in stock at 3 retailers including WGC Shop, WGC Shop, WGC Shop. We track availability across 1 airsoft stores and update stock status regularly.
What is the T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) compatible with?
It is designed for GBBR platform and fits KWA LM4 model. M4/AR, GBBR
Is the T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) a good gbbr buckings & nubs upgrade?
The T-N.T. KWA M4 Full Hop-Up Retrofit Kit ( S+ Inner Barrel ) by T-N.T. is listed in our GBBR Buckings & Nubs category and is priced from $107.76. We aggregate prices from 1 retailer so you can compare and find the best deal. Check the price comparison table above for current pricing from each store.

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