This Bolt Assembly is a drop-in bolt carrier group that fits the KWALM4D models. This assembly comes with the nylon polymer bolt and metal Bolt Carrier Key pre-installed, and also includes the metal piston stop insert. The stock BCG that comes in all LM4D models and is rated at around 380-400 FPS
CQB type BCG is rated round 330-350 FPS
Fits these models
GBB LM4D, LM4D RIS PTR, LM4D/LM4D M-LOK
Match the number on your model’s exploded diagram in Part Finder & Diagram. Genuine KWA part, sold direct by KWA.
| Weight | 1 lbs |
|---|---|
| Dimensions | 7 × 1 × 1 in |
| FPS | CQB, Field Type |
Replacing a worn or damaged bolt assembly in your LM4D rifle. Upgrading performance in CQB-style play where rapid cycling and consistent performance are essential. Specifically designed for the LM4D GBBR platform (not compatible with standard LM4 or LM4C series).
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