AR-9/45 Pistol Caliber Billet Upper LRBHO | 9mm, .45 ACP, .40 S&W, 10mm | G2

AR-9/45 Pistol Caliber Billet Upper LRBHO | 9mm, .45 ACP, .40 S&W, 10mm | G2

Build your custom AR-9/45 pistol caliber carbine with the AR-9/45 Pistol Caliber Billet Upper LRBHO from New Frontier Armory. This upper receiver is crafted from 7075 T6 aircraft-grade billet aluminum, ensuring exceptional strength, durability, and precision. Designed to accept 9mm, .40 S&W, .45 ACP, and 10mm barrels and bolts, this upper provides flexibility for any AR-9/45 style platform build.

The Slick Side design offers a clean, sleek appearance, while the Last Round Bolt Hold Open (LRBHO) feature automatically holds the bolt open when the magazine is empty, ensuring reliability and improving your shooting experience. This LRBHO system is specifically designed to work with Glock-style magazine lowers, allowing seamless operation when using Glock magazines.

Key Features:

• Precision Machined: Constructed from 7075 T6 billet aluminum, offering superior strength and rigidity.
• Matte Black Hard-Coat Anodized Finish: Provides corrosion resistance and a sleek, professional appearance in compliance with MIL 8625 Type 3 Class 2.
• Multi-Caliber Compatibility: Works with 9mm, .40 S&W, .45 ACP, and 10mm calibers (depending on your choice of barrel and bolt).
• LRBHO (Last Round Bolt Hold Open): Integrated LRBHO technology ensures the bolt locks back when the magazine is empty, increasing reliability and ease of use.
• Designed for Blowback Systems: This upper is designed to function with blowback gas systems, making it perfect for pistol caliber carbines.
• Slick Side Design: Clean, streamlined appearance with no forward assist or ejection port cover for a smooth, low-maintenance upper.
• Compatible with Glock Magazines: Works with lowers that accept Glock-style magazines and features a custom wire form for reliable bolt hold open functionality.
• CNC Manufactured: Precisely machined to MILSPEC tolerances using state-of-the-art CNC equipment for consistent quality and accuracy.

Specifications:

• Manufacturer: New Frontier Armory
• Model: AR-9/45 Pistol Caliber Billet Upper with LRBHO
• Caliber: 9mm, .40 S&W, .45 ACP, 10mm (depending on barrel and bolt selection)
• Material: 7075 T6 billet aluminum
• Finish: Matte black hard-coat anodized per MIL 8625 Type 3 Class 2
• Dimensions: 7.662″ (L) x 1.375″ (W) x 2.314″ (H)
• Weight: 8.96 oz
• Gas System: Blowback (not compatible with gas tubes)
• LRBHO: Last Round Bolt Hold Open functionality, compatible with Glock-style lowers
• Magazine Compatibility: Designed for Glock-style magazines
• Lead Time: Uppers are produced monthly, expect 8-10 weeks lead time.

Why Choose the AR-9/45 Pistol Caliber Billet Upper LRBHO?

• Strength and Precision: Machined from high-quality 7075 T6 billet aluminum, ensuring maximum durability and precision.
• Seamless Integration: Works flawlessly with Glock-style lowers and magazines for smooth cycling and operation.
• Reliable Performance: The LRBHO feature ensures your bolt locks back when the last round is fired, promoting efficiency and ease of use.
• Customizable: Choose from multiple calibers (9mm, .40 S&W, .45 ACP, 10mm) to configure your AR-9 or AR-45 build exactly how you want it.
• Sleek Design: The Slick Side design eliminates unnecessary components for a minimalist, clean appearance.

Important Notes:

• Lead Time: Please note, these uppers are put into production on a monthly basis, so please expect an 8-10 week ETA for your order to ship.
• No Gas Tube: This upper is designed specifically for blowback systems and does not accommodate gas tubes.
• Magazine Compatibility: The LRBHO feature is designed for use with Glock-style magazines only. If you're using different magazine specifications, minor adjustments may be required to ensure proper function.