14.5 5.56 CMV Barrel W/Pinned Epsilon SL Mid-Length

Aero Precision · Barrels

Best price

$195.99at Brownells

checked Sep 30, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$195.99checked Sep 30, 2026	Check store	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

About this part

The 14.5 5.56 CMV Barrel W/Pinned Epsilon SL Mid-Length is a 14.5" 5.56 / .223 barrel from Aero Precision with a mid-length gas system. One store lists it, Brownells at $195.99.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Gas system: Mid-length · Handguards
Barrel length: 14.5" · Handguards

Specifications

Manufacturer: Aero Precision
Platform: AR-15
Caliber: 5.56 mm NATO
Barrel length: 14.5"

From the manufacturer

A Pinned 14.5-Inch Barrel Complete With a Seamless Epsilon SL Muzzle Brake

One of the benefits of the Aero Precision Epsilon SL muzzle brake is the ability for the brake's slim profile to melt into the profile of a standard AR barrel, so you can slip a gas block over the brake and onto the barrel with ease. However, pinning a muzzle brake onto a barrel permanently is a tough task that many AR builders might not have the tools or skill set to do. Enter the Aero Precision 14.5-inch CMV barrel complete with an already-pinned Epsilon SL brake.

These barrels are machined from 4150 chrome-moly vanadium steel for strength and durability and are finished with a QPQ-nitride finish that matches the finish applied to the brake for a seamless, well-matched package. With the professionally pinned brake in place, the overall length of the barrel with the brake runs past 16 inches, making it legal for your non-NFA carbine build.

The button-rifled barrel features a twist rate of 1:7 inches and a gas-block journal that measures .750 inch. Both mid-length and carbine-length gas systems are available, and the barrel is MPI tested to ensure quality.