Geissele Automatics Ar-15 11.5'' Chf Chrome Lined Barrel 5.56Mm

The Geissele Automatics AR-15 11.5" CHF Chrome Lined Barrel in 5.56mm is built for shooters who demand reliability under hard use. Cold hammer forged from chrome molly steel and finished with a chrome lining and manganese phosphate coating, this barrel is precision machined at Geissele's North Wales, PA facility to exacting standards. Every barrel undergoes High Pressure Testing (HPT) and Magnetic Particle Inspection (MPI) before it leaves the shop — that's the kind of quality control you expect from a tier-one maker. The 11.5" length works well for short-stroker builds, CQB setups, or anyone running a compact AR where full-length barrels feel unwieldy.

The 1/7 twist rate is a proven all-rounder for 5.56 NATO, stabilizing everything from lightweight varmint rounds to heavier tactical loads. The government profile keeps weight down and is the mil-spec standard you're used to seeing. Carbine-length gas tube keeps the action snappy and reliable, and the single dimple for gas block set screw means your front sight post or low-pro gas block locks down solid with no guesswork.

Whether you're building a duty rifle, a competition gun, or something in between, a Geissele barrel is a foundational upgrade that pays dividends in consistency and durability. You're not buying a guess—you're buying a part that's been stress-tested and measured to keep running.

Key Features

• Cold Hammer Forged chrome molly steel — superior toughness and consistency
• Chrome lined bore — resists corrosion and extends barrel life
• Manganese phosphate finish — durable, low-gloss protective coating
• High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) — every barrel vetted for defects
• 1/7 twist rate — stable platform for a wide range of 5.56 loads
• Government profile — mil-spec standard, reduced weight
• Carbine-length gas tube — optimized for 11.5" barrel length
• 1/2 x 28 threads — standard AR-15 muzzle device compatibility
• Single dimple gas block index — repeatable, secure mounting

Specifications

Frequently Asked Questions

What AR-15 platforms does this barrel fit?

This barrel is designed for standard mil-spec AR-15 builds. It features government profile dimensions, 1/2 x 28 muzzle threads, and a carbine-length gas tube, making it compatible with most modern AR-15 upper assemblies and parts.

Is this barrel good for precision rifle or long-range shooting?

Geissele barrels are known for accuracy and reliability across a wide range of applications, from duty rifles to competition builds. The cold hammer forging process and rigorous quality control support precision, though performance will also depend on your upper assembly, ammunition, and shooting technique.

What does chrome lining do?

Chrome lining protects the bore from corrosion and significantly extends barrel life, especially if you run corrosive ammunition or shoot in harsh conditions. It also simplifies cleaning and maintenance.

What's included with the barrel?

You receive the barrel itself. Gas tube, bolt carrier group, upper receiver, and other components are sold separately.