Sunday GunDay: World’s Lightest AR Rifle — 3.8-Lb OIP Gen 2

One of the most radical black rifles ever created wowed the crowd at the SHOT Show Range Day back in 2019. At the Boulder Rifle & Pistol Club outside Las Vegas, Battle Arms Development showcased a true “UltraLight AR”. With Titanium and carbon fiber components, the Battle Arms OIP Gen 2 AR-platform rifle weighs just 3.8 pounds unloaded. Compare that to 7.5 pounds (or more) for a typical AR-15.

Battle Arms 3.8-Lb Titanium/Carbon OIP 2 — World’s Lightest AR

At the Boulder City Range GunsAmerica Digest Managing Editor True Pearce talked with one of the Battle Arms gun designers who helped created this unique rifle, claimed to be the world’s lightest AR (yes it is lighter than ARs with polymer lowers). READ GunsAmerica Battle Arms OIP 2 Review HERE.

In the video below, True Pearce shows the key features of the $3290.00 Battle Arms OIP 2. Then he tests its function shooting offhand at steel targets. Despite its low mass, and exotic components, the Battle Arms OIP 2 AR carbine performed flawlessly.

The video above features the Battle Arms OIP GEN 2 AR that weighs just 3.8 pounds. To save weight, this carbine features a carbon fiber handguard and various titanium parts including a Titanium muzzle brake. Look carefully at how even small controls have been modified to save ounces.

GunsAmerica reported: “Battle Arms has done a lot of work to find all the ounces that can be spared to make this gun as light as possible.” Even at just 3.8 pounds, the gun is very controllable during rapid fire. Despite a steep $3290.00 MSRP, the first run of Battle Arms’ sub-4-lb GEN 2 OIP sold out. That proves that “light is right”, as least in the AR carbine market.

Pew-Pew Tactical Review of Battle Arms OIP 2

The team at Pew-Pew Tactical also field-tested the Battle Arms OIP Gen 2 rifle. The reviewers were impressed, finding that felt recoil was very manageable, even given the rifle’s very low 3.8-lb weight:

Pew-Pew Tactical Battle Arms OIP Gen 2 Review

The Concept Behind the OIP — Why Go Ultra-Light

Recoil Magazine featured an earlier model OIP rifle back in 2016 (Issue 21). This design was later refined into the current OIP Gen 2 version. Recoil’s writers explained the concept behind this unique design:

Battle Arms OIP Rifle — How Low Can You Go…

“The OIP had its genesis as a simple idea to build a lightweight gun that just plain worked. Dave Lake and Matt Babb of Bentwood Gunsmithing spent years perfecting the concept, incorporating the latest components where they existed and working with companies to customize parts that didn’t. They wanted a well-balanced gun with an optimized operating system and literally no excess — to be as light as humanly possible.

Bentwood didn’t want to utilize polymer receivers and worked with Battle Arms Development to develop a super lightweight receiver set with intricate machining to shave as much weight as they could. They investigated some more exotic material choices, but found them to be prohibitively expensive.”
— Source: RecoilWeb.com

Battle Arms OIP 2 Owner’s Review on TFB

Last year, The Firearm Blog (TFB) published an extensive review of the Battle Arms OIP 2. TFB writer/tester Rusty S. had purchased this OIP 2 rig with his own funds — making a serious $3290.00 investment.

After using the rifle in the field, Rusty concluded: “Objectively, the Battle Arms Development OIP 2 is a very well put together, reasonably accurate and very lightweight rifle. It has proven to be reliable, durable, and soft shooting despite its lightweight configuration. Subjectively, the OIP 2 has proven to be the rifle I most often bring with me into the backcountry with the exception of during deer and elk hunting season. It’s nice to have a 500-yard-capable rifle with me that weighs so little. All that being said, the amount that the OIP2 will lighten one’s wallet by will be a real sticking point for most prospective buyers.” Rusty added: “At this price point, I would appreciate some sort of ultra lightweight flip-up iron sights. I also don’t think the rear of the buttstock is as ergonomically optimal as it could be.”

Product Description from Battle Arms
[The Battle Arms OIP 2 is] the lightest, purpose-built, no compromise, production ultralight survival carbine[.] It took years in R&D, engineering and multiple U.S. Patents to create the most robust and reliable lightweight AR platform on the market. Building something that is not only lightweight but all the while not sacrificing strength and performance is the ultimate secret of the Battlearms OIP.

Every component, shy of a few detents and springs, are custom built and designed to work together as a complete system. No, you will not find a parts gun here….The OIP utilizes a patented OIP buffer system in conjunction with a lightweight titanium bolt carrier with ArmorTi finish for durability. It is balanced with a custom mid-length gas system and a specially designed titanium THUMPER compensator.

New in Gen 2 is the user-configurable M-LOK carbon fiber handguard and a carbon-fiber pistol grip that weighs barely one ounce. A new titanium billet CNC-machined bolt catch and a lightweight single-side Clutch charging handle are just a couple more of the new upgrades to the OIP. The rifle was designed to be an optics-ready carbine, providing a single stretch of Picatinny rail in the optimal spot for a red dot sight while eliminating the unnecessary weight of the rail elsewhere. The patented, lightweight 7075-T6 billet aluminum receivers are not simply skeletonized and hollowed out but is carefully engineered with structural consideration. The technology and engineering that foes into the OIP® Ultralight Rifle bring forth the next evolution of the AR platform.

Want to learn more? Check out this review of the Battle Arms OIP 2 Carbine on DefenseReview.com.