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Gemtech GT88899 MM9 Adapter 5/8-24 for .300 Blackout

Gemtech

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Gemtech GT88899 adapter (MM9) — 5/8-24 fixed threadmount for 300 Blackout; source attribute indicates for subsonic ammo only. Package Qty: 1 (SKU GT88899).

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SKU: GT88899 Categories: , , Brand: Product ID: 274455

Description

Description

Product Overview

Gemtech GT88899 Adapter MM9 is a silencer accessory with a fixed 5/8-24 threadmount intended for .300 Blackout as indicated in the catalog name. The source attributes include “Subsonic ammo only” and “Fixed Threadmount.”

Why This Product

Thread size (5/8-24) and the fixed-thread mounting approach are central to compatibility with barrels or suppressors using that interface. The recorded note “Subsonic ammo only” is important for application planning and user guidance.

Key Verified Specifications

  • Manufacturer/Brand: Gemtech (product-274455:f002, product-274455:f006, product-274455:f007).
  • Category: Silencer Accessories / Silencers / Accessory (product-274455:f004, product-274455:f005, product-274455:f003).
  • Thread size / adapter: 5/8-24 (implied by full name and adapter designation) (product-274455:f001 catalog full name).
  • Attributes: Subsonic ammo only; Fixed Threadmount (product-274455:f009, product-274455:f010).
  • Package Quantity: 1 (product-274455:f008, product-274455:f011).
  • SKU: GT88899 (product-274455:f013).

Appropriate Use Cases

  • Armorers and accessory buyers who need a fixed-thread adapter for .300 Blackout barrels where the supply notes emphasize subsonic use (product-274455:f009).
  • Procurement for suppressor accessory kits that require a 5/8-24 interface (product-274455:f013).

What Customers Should Know

  • The source attributes explicitly state “Subsonic ammo only” — confirm operational constraints and safety guidance with the manufacturer or tech sheet before deployment (product-274455:f009).
  • Package Qty is 1 — confirm order quantity as needed (product-274455:f008).
  • SKU for ordering/reference: GT88899 (product-274455:f013).
  • Full compatibility details, torque specs, and any included hardware are not present in the source facts and should be confirmed prior to purchase.

Specifications

  • Short Stroke Gas Piston Gas System (Rifle Length)
  • 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
  • 1:8 Twist Rate Rifling

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