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16" 300 Blackout HD Upper with Crucible(TM) Heat Shield(Quick Ship)
Your Price $429.99
LOADING...
A day out training is something we all look forward to, running and gunning, practicing those tactical moves, and sending a bunch of ammo down range into the target. A fun day can quickly go South by accidentally coming in contact with a hot muzzle. If your muzzle device makes contact with you or your clothing, the best case scenario is ruined clothing or gear and worse case a painful blistering burn. Set that hot rifle down in its case and you might melt the nylon or put it in the back of the car ( I have done this) and burn a hole in the the carpet of the wife's SUV.

The Crucible(R) Heat Shield is made of 6061-T6 Aluminum and extends our Hardened Arms LLC, AR15 quad rails out in length so that the handguard covers the entire barrel and muzzle brake. This serves to protect and shield the shooter from burns and as an added bonus it looks (no pun intended), amazingly cool. Its extra length and matching 
vent ports create a custom streamlined look that absolutely rocks! The Crucible(R) Heat Shield and matching SMC muzzle brake offers all of the recoil dampening, muzzle rise reduction of a great muzzle brake. While the system does not reduce sound or flame signature, its heat shield is very effective and its look is a great enhancement to any AR15.

The Crucible(R) Heat Shield is sold as a complete system and is available on our 10" 12" and 15" screw mount Quad rails with versions coming soon for the SDX(TM) Hardened Arms Handguard. The product includes the heat shield, rail extension, mounting sleeve, screws and a matching Hardened Arms SMC muzzle brake, jam nut and rail mounted handstop. The Crucible(R) Heat Shield Rail Extension is a factory mounted accessory for Hardened Arms LLC, Handguards only.

16" 300 Blackout Upper with Crucible(R) Heat Shield Features:

Hardened Arms M4 Feed Ramp Flat Top Receiver
Black anodized mil-spec finished upper receiver
Feed ramps for increased feeding reliability on barrel and upper
Laser etched T-Marked upper receiver
4150CMV Mil-B Steel Nitrogen Stress Relieved Barrel
5-Groove, 1/8 twist button rifled barrel
Chambered in 300 Blackout
16in Socom barrel with M4 Extension
.750" diameter at gas block
5/8x24 threaded barrel
Low profile gas block
Barrel dimpled to secure gas block
Pistol length gas system
SMC matching Muzzle Brake
Hardened Arms Quad Rail free float 15in hand guard with Crucible(R) Heat Shield

Fits any mil-spec AR15 lower receiver.

Quality parts and precision manufacturing processes make sure your AR 15 Upper receiver is spot on. We are the manufacturer and we make sure that you get great quality at factory direct value. Orders yours today and experience the difference!
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4150CMV Barrel Steel
Whether starting with our 4150CMV machine gun barrel steel or highly refined 416R stainless steel our barrels are a cut above the rest. Engineered for accuracy and durability they are double nitrogen stress relieved and sodium nitrate coated/melonited (raw stainless steel is polished with melonited extensions). Index pins that lock into the upper receiver are pinned into the barrel through the extension on melonited barrels meaning the extension will never come loose. Machined in house on state of the art CNC equipment we deliver a barrel with every spec carefully controlled for peak performance.
 
Rail Lock Free Float Handguard
Machining our handguards in house provides us the opportunity to integrate features not found on most rails in the industry. Our rail lock feature, is designed to dovetail around your upper reciever insexing to insure a perfectly aligned rail that extends over the end of the upper reciever enough to do away with the unsightly gap found on lesser quality rail to receiver match ups. Combined with 6061-T6 aluminum with class II type III, hard coat anodized finish to match our uppers, fit and finish are top notch. Hardened Arms has many rail styles to choose from that are both stylish and functional. Our handguard offerings include quad rails, reduced weight rails, ergonomic smooth rails, skinny competition rails and our innovative patented Lumashark(R) illuminated rail with high lumen lights built in. Hardened Arms rails come in a variety of lengths and choices to meet your mission specific needs. .
 
Attention to detail.
It's the attention to detail that sets Hardened Arms apart. Items such as our machined in house 'Jam Nut' ensure ease of changing muzzle devices and indexing flash hiders while being fully re-useable. Crush washers are a thing of the past as they are single use and can induce stress and cause problems if used improperly. Bull barrels use shims to time your muzzle device without adding to the diameter of the already rigid barrel.

Alignment dimples are also machined into your barrel at the same time the gas port is drilled to provide 100% accurate positioning of your gas block and to keep it securely in place in spite of recoil. We machine our gas blocks and adjustable gas blocks right here from 4150 US barrel steel to give you the strongest and most durable product possible..
Hardened Arms uppers are high end, accurate, head spaced, inspected and test fired prior to shipping. They are built using stringent specs, top quality parts and procedures to ensure maximum reliability and performance.

You are responsible for knowing your state laws regarding barrel lengths, pistol and short barreled rifle restrictions. 20% restocking fees if you cancel anytime after you order or can not take delivery due to state restriction. Dealer programs are available on our website. Two year warranty against manufacturer defects. Finishes will wear with use, no warranties apply to finish wear. Fits any mil-spec AR15 lower receiver.
 
515 Tucker Ave Friday Harbor, WA 98250 | sales@hardenedarms.com
Phone: 425-530-0837