Experience the essence of Vietnam-era special operations with Potomac Armory's meticulously crafted XM177E2 Upper Receiver. This clone-correct replica captures the iconic design of the original "Air Force Contract" carbine while incorporating modern manufacturing techniques for enhanced reliability and performance.
- M16A1 upper receiver without shell deflector for period-correct aesthetics
- XM177 flash hider with proper grenade ring, replicating the original moderator
- 11.5" 5.56mm NATO barrel for versatility
- 1-12 twist rate chrome-lined bore and chamber for accuracy with period-correct ammunition
- Carbine-length black polymer handguards with heat shields for authentic look and feel
- Manganese phosphate mil-spec bolt carrier group with Carpenter 158 bolt for reliability
- M16A1 ejection port cover and teardrop forward assist for historical accuracy
- A1 rear sight assembly for easy adjustment and period-correct sight picture
- Magnetic particle (MPI) and high pressure tested for safety and durability
Are you a military history enthusiast yearning to connect with the firearms that shaped modern warfare? Or perhaps you're a clone enthusiast seeking the perfect centerpiece for your Vietnam-era arsenal? The search for an authentic XM177E2 replica ends here.
Potomac Armory's XM177E2 Upper Receiver solves the common frustrations faced by retro firearm enthusiasts. No more compromising on historical accuracy or settling for subpar performance. Our meticulously researched and crafted upper receiver delivers the look, feel, and function of the original XM177E2, with the added benefit of modern manufacturing precision.
Imagine holding a piece of history in your hands, feeling the balance and heft that Special Forces operators experienced in the jungles of Vietnam. With our XM177E2 upper, you're not just owning a firearm component; you're stepping into a pivotal moment in military history.
The XM177E2 is a shortened version of the M16 and was used extensively by the United States Special Forces in Vietnam. The design concept was to be light, simple, fast, and deadly in the hands of trained operators. However, one complaint about the design was that it had a fierce muzzle report, so a moderator was added to the barrel to dampen the effect on soldiers.
The XM177E2, also known as the Colt Commando, emerged in the mid-1960s during the Vietnam War. It was developed in response to the U.S. military's need for a compact, lightweight carbine suitable for close-quarters combat and special operations.
Evolving from the earlier XM177E1, the E2 variant featured a slightly longer 11.5-inch barrel with an improved moderator, which reduced muzzle flash and sound signature. The weapon retained the basic operating system of the M16, but in a more maneuverable package.
Primarily used by U.S. Army Special Forces, Navy SEALs, and Air Force Security Police, the XM177E2 saw extensive action in Vietnam. Its compact design proved invaluable in the dense jungle environments and tight urban spaces of Southeast Asia.
Although never officially adopted as a standard-issue weapon, the XM177E2 laid the groundwork for future carbines, directly influencing the development of the modern M4 carbine.
Our commitment to historical accuracy sets the XM177E2 upper apart. Take the iconic flash hider, for example. While the original XM177 muzzle device was technically a suppressor, we've recreated it as a non-NFA flash hider that maintains the classic look while enhancing your shooting experience, and eliminating the regulatory burden of a suppressor.
The barrel options cater to both collectors and practical shooters. The 11.5" barrel offers for maximum historical accuracy.
But don't let its historical significance fool you - this isn't just a wall hanger. Built to perform, our XM177E2 upper is ready for your next range day or tactical shooting. Experience the legendary handling of this compact carbine upper while enjoying the reliability of modern production methods.
While many focus on external features, the 1-12 twist rate barrel is a detail that true enthusiasts will appreciate. This slower twist rate is perfect for the 55-grain ammunition commonly used in the Vietnam era, as well as common military X193 ammo which is today widely available and affordable. While most modern shooting rifles have a 1:7 twist, the 1:12 twist ensuring period-correct ballistics and accuracy for the popular 55 grain and lighter ammo.
- Upper Receiver: M16A1 style, 7075-T6 aluminum, hardcoat anodized
- Barrel: 11.5", chrome-lined 4150 CMV steel, 1:12 twist
- Muzzle Device: XM177E2 flash hider, 5.5" length
- Front Sight: Non F-marked FSB for historical accuracy (standard A1 height)
- Handguards: Black carbine-length polymer with aluminum heat shields
- Bolt Carrier Group: Mil-spec, manganese phosphate finish, MPI and HP tested
- Weight: Approximately 4.3 lbs (without BCG)
- Overall Length: 23" (with 11.5" barrel and flash hider)
NFA Warning: This upper receiver will not be 16" when affixed to a rifle lower, and will be an NFA item as a short barreled rifle, if not configured as a lawful pistol. NFA items are subject to registration and taxation. The muzzle device is not pin and welded to the barrel.
Don't miss this opportunity to own a piece of military history. Whether paired with an H&R M16A1 lower or a modern forged receiver, the XM177E2 upper receiver from Potomac Armory is your gateway to the golden age of carbine development. Order now and experience the legend for yourself.
Photo credits: Potomac Armory, The Firearms News, Brownells, Tactical Life
Colt
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Potomac Armory
Daniel Defense
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Potomac Armory
Potomac Armory