Description
Description
XK9 Pistol Caliber Billet Upper with LRBHO (Last Round Bolt Hold Open)
Model: XK9 Upper
Caliber: 9mm
Weight: 8.96 oz
Measurements: 7.662″ x 1.375″ x 2.314″
Other Specifications and Features of the Billet XK9
- Machined from 7075 T6 aircraft grade billet aluminum
- Matte black hard-coat anodized per Mil 8625 Type 3 Class 2
- Compatible with all standard AR-15 / AR-9 components and most aftermarket parts
- Manufactured to MILSPEC on state of the art CNC equipment for consistent quality parts and exacting tolerances
- Designed to match lines with Evolution X Defense XK9 Lower
- Contains integrated Last Round Bolt Hold Open (LRBHO) technology (PATENT PENDING) that reliably holds the bolt open when magazine is empty
- LRBHO feature is designed for lowers that accept Glock style magazines
- **NOTE — This upper is not machined for a gas tube as it is intended for blowback gas systems only
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