Lewis Machine & ToolAll Lewis Machine & Tool barrels

LMT MRP 5.56 NATO Chrome Lined AR-15 Barrel - 16" 1:7 Twist - R-L7PA1B

Lewis Machine & Tool LMT MRP 5.56 NATO Chrome Lined AR-15 Barrel - 16" 1:7 Twist - R-L7PA1B - Barrel for AR-15 - view 1
Buy Now

Lewis Machine & Tool

Overview

The LMT MRP 5.56 NATO Chrome Lined AR-15 Barrel features a 16-inch length and a 1:7 twist rate, making it well-suited for stabilizing a range of bullet weights, particularly heavier projectiles. The chrome lining enhances durability and corrosion resistance, contributing to the barrel's longevity and consistent performance. This barrel is commonly found in tactical and general-purpose builds, where reliability and versatility are key considerations.

Specifications

MPNR-L7PA1B
Barrel Length16
Caliber5.56 NATO
Twist Rate1:7
CoatingChrome Lined

Available Merchants(2)

Prices checked

Stock Alert

Log in to get notified when this product is back in stock.

BattleHawk Armory logo
BattleHawk Armory
Shipping varies
Shipping Speed
Out of Stock
$538
Buy Now
Brownells logo
Brownells
Free shipping
Shipping Speed
Out of Stock
$554
Buy Now

Build history on GunPartPicker

Builders on GunPartPicker first added the LMT MRP 5.56 NATO Chrome Lined AR-15 Barrel - 16" 1:7 Twist - R-L7PA1B to a build in March 2026.

It was out of stock everywhere we track for all of August 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $538.20 at BattleHawk Armory for when it comes back.

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 stockin 867 builds
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 stockin 304 builds
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 stockin 480 builds
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$42in 279 builds
Bravo Company M16 Bolt Carrier Group Black

Bravo Company M16 Bolt Carrier Group Black

Bolt Carrier Group$199in 659 builds
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger

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

Trigger$335in 444 builds

Builds Featuring This Part

See all 1 →

Builds in the community that include the LMT MRP 5.56 NATO Chrome Lined AR-15 Barrel - 16" 1:7 Twist - R-L7PA1B

BuildPartsTotal
new 5.56 build build
new 5.56 build		17$4151.96

Review this product

Share your thoughts with other customers

Be the first to review

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