LMT Defense Monolithic 5.56 NATO 11.5 Carbine Length Black Barrel

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Lewis Machine & Tool LMT Defense Monolithic 5.56 NATO 11.5 Carbine Length Black Barrel - Barrel for AR-15 - view 1
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Lewis Machine & Tool

Overview

The LMT Defense Monolithic 5.56 NATO 11.5 Carbine Length Barrel is designed for builders looking to create a compact and reliable platform. With its 11.5-inch length and carbine gas system, this barrel offers a balance of maneuverability and performance, making it well-suited for a variety of applications. This barrel is commonly found in builds that prioritize a carbine gas system and utilize the 5.56 NATO caliber, making it a solid choice for tactical and home defense configurations.

Specifications

MPNR-L7TA1B
Barrel Length11.5
Caliber5.56 NATO
Gas System LengthCarbine

Available Merchants(2)

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Palmetto State Armory
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$538
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Brownells
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$554

Build history on GunPartPicker

Builders on GunPartPicker first added the LMT Defense Monolithic 5.56 NATO 11.5 Carbine Length Black Barrel to a build in February 2026.

Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today both retailers we track have it in stock. Prices barely moved in September 2026, holding around $554.40, so there haven't been real sales lately. Buying today, the lowest price is $538.20 at Palmetto State Armory, which matches the best price we saw in September.

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