New
Lambda Defence GHM9 GBB SD Conversion Kit - Black View larger
Previous Next

Lambda Defence GHM9 GBB SD Conversion Kit - Black

Airsoft SD conversion kit for B&T GHM9 GBB by Lambda Defence in black finish.

Complete conversion to SD version with an extended M-LOK handguard, outer barrel, and suppressor 243 × 42 mm.

Official B&T GHM9-SD markings 9mm x 19.

Compatible with GHM9 Gen1 and Gen2 (G-series and MP9 magazines).

54,53 € tax incl.

Availability: Out of stock


03. 04. 2026 (3 pcs)

LAMBDA17

: Lambda Defence

Accessories

  • 33,39 € In Stock

    : Maple Leaf

    MPLF068

    Precision Inner Barrel CRAZY JET by Maple Leaf with a diameter of 6.04 mm. Length of 180 mm (MP7 and other models). Ultimate accuracy thanks to the innovative Crazy Jet technology. Improves performance and grouping of the weapon. Compatible with GBBR gas rifles and SMG of the TM standard (WE, VFC and others).

    33,39 €
    On the way
    Pre order
  • 21,98 € In Stock

    : Action Army

    D01-046

    Precision Inner Barrel for AAP-01 GBB Pistols and Other Gas Pistols by Action Army in 6.03 mm diameter. Length of 212 mm (for AAP-01 with silencer or 130mm barrel extension). Improves power, range, and accuracy. Compatible with both stock AAP-01 chambers and CNC upgrade variants. Barrel cutouts for GBB / VSR buckings. Unbridged variant.

    21,98 €
    In Stock
    Add to cart
  • 232,07 € In Stock
    New Free shipping

    : Lambda Defence

    LAMBDA15

    B&T GHM9 GBB Gen2 airsoft submachine gun by Lambda Defence and EMG in black finish. Officially licensed Brugger & Thomet replica with authentic markings. Barrel with 14 mm CCW thread. Gen2 uses KWA MP9, VORSK VMP or LAMBDA GHM9 Gen2 GBB magazines. Realistic blowback. M1913 RIS stock adapter and M-LOK handguard. Ambidextrous controls.

    232,07 €
    On the way
    Pre order

Lambda Defence GHM9-SD Conversion Kit

Do you want to take your PDW GHM9 GBB to the next level and give it a clean carbine-style appearance? Would you like to increase performance by installing a longer inner barrel but have nowhere to hide it? Are you looking to improve ergonomics and weight balance of the replica? This SD conversion kit from Lambda Defence replaces the original short handguard with a complete aircraft-grade aluminum set consisting of a threaded outer barrel, a long suppressor with official B&T GHM9-SD markings, and an extended M-LOK handguard. The result is not only a more aggressive look, but also more space for accessories and improved ergonomics. The kit is designed to fit GHM9 Gen1 and Gen2, so you don’t need to worry about your replica version.

Length comparison of the SD set (bottom) versus Gen2 handguard (top) and Gen1 (middle)

Length comparison of the SD set (bottom) versus Gen2 handguard (top) and Gen1 (middle)

Key Features

  • SD conversion for GHM9:
    Complete aluminum front-end conversion to SD configuration.

  • Official B&T markings:
    Suppressor engraved with 9mm x 19 B&T GHM9-SD, ideal for collectors and Mil-Sim users.

  • Aluminum outer barrel:
    Includes a threaded outer barrel for the suppressor.

  • Extended M-LOK handguard:
    Lightweight and rigid handguard with accessory mounting options. Up to 2× longer than the Gen2 version.

  • Full compatibility:
    Fits GHM9 Gen1 / GHM9-G (G-series magazines) and Gen2 / GHM9-C (MP9 magazines).

Technical Specifications

  • Handguard: Extended M-LOK handguard
  • Mounting interface: Top and bottom RIS rail, 2× 3 M-LOK slots
  • Material: Aircraft-grade aluminum (manufacturer did not specify the alloy)
  • Color: black
  • Weight: 500 g (set)
  • Suppressor length: 243 mm
  • Suppressor diameter: 42 mm
  • Maximum inner barrel length to be hidden in the suppressor: 245 mm (unverified sources state up to 250 mm)
  • Outer barrel thread: Not specified by the manufacturer (designed for the supplied SD suppressor)
  • Compatibility: GHM9 Gen1 / GHM9-G, GHM9 Gen2 / GHM9-C GBB

Package Contents

  • Aluminum threaded outer barrel
  • Long suppressor with official B&T GHM9-SD markings
  • Extended M-LOK handguard

Notice

  • Designed exclusively for airsoft GHM9 GBB replicas.
  • This is not a real suppressor, only an airsoft replica.
  • Installation may require basic technical skills.
  • When installing a longer inner barrel, we recommend centering and securing the barrel inside the suppressor for improved accuracy (centering inserts not included).

Installation guide including removal of the original handguard from the GHM9 Gen1 GBB (same procedure applies to Gen2)

ColorBlack
Weight (g)500 (g)
Body/receiver materialMetal