Lewis Machine & ToolAll Lewis Machine & Tool barrels

LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5"

Lewis Machine & Tool LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5" - Barrel for AR-15 - view 1
Lewis Machine & Tool LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5" - Barrel for AR-15 - view 2
Lewis Machine & Tool LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5" - Barrel for AR-15 - view 3
Lewis Machine & Tool LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5" - Barrel for AR-15 - view 4
Lewis Machine & Tool LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5" - Barrel for AR-15 - view 5
Buy Now

Lewis Machine & Tool

Overview

The LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel is a 14.5" barrel designed for reliable performance in the 5.56 NATO caliber. Its chrome lining enhances durability and corrosion resistance, making it suitable for rigorous use while maintaining accuracy. This barrel is often utilized in builds that prioritize lightweight configurations and tactical applications.

Specifications

MPNL7NC1B
Caliber5.56 NATO
Barrel Length15

Available Merchants(1)

Prices checked

Price Alert

Log in to set a price alert on this product.

Primary Arms logo
Primary Arms
Free shipping
Shipping Speed
In Stock
$717
Buy Now

Build history on GunPartPicker

Builders on GunPartPicker first added the LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5" 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 the one retailer we track has it in stock. Prices barely moved in September 2026, holding around $716.85, so there haven't been real sales lately. Buying today, the lowest price is $716.85 at Primary Arms, which matches the best price we saw in September.

Trending barrels →

Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers

Not sure which barrel to pick?

We ranked every barrel by how often it shows up in real builds on GunPartPicker.

Read the guide: AR-15 Barrel Length & Brand Report →

Check it against the live catalog:

Frequently Built With

Popular alongside barrels on GunPartPicker

Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4

Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4

Upper Receiver$129 · out of stock
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Lower Receiver$155 · out of stock
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers

Charging Handle$69 · out of stock
Maximize Your AR-15's Potential with Tacfire's 15" ACE M-LOK Handguard - Black Excellence - HG20-15

Maximize Your AR-15's Potential with Tacfire's 15" ACE M-LOK Handguard - Black Excellence - HG20-15

Handguard$42
Bravo Company M16 Bolt Carrier Group Black

Bravo Company M16 Bolt Carrier Group Black

Bolt Carrier Group$199
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger

Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger

Trigger$285

Builds Featuring This Part

See all 1 →

Builds in the community that include the LMT MRP 5.56 NATO Chrome Lined Piston AR-15 Barrel - 14.5"

BuildPartsTotal
recce 15" 5.56 build
recce 15" 5.56		5$1769.75

Review this product

Share your thoughts with other customers

Be the first to review

No reviews yet. Be the first to review this product!