Unwrap Day 8 of Buildmas w/ Streamlight Weapon Lights On Sale! - SHOP NOW

 

Unwrap Day 8 of Buildmas w/ Streamlight Weapon Lights On Sale! - SHOP NOW

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GEISSELE AUTOMATICS LLC AR-15 SUPER DUTY NANO COMPLETE UPPER RECEIVERS 5.56MM

Barrel Length
Color
AR-15 14.5 Super Duty Nano Complete Upper Receiver Black
Brownells #
100040519
MFR #
08-219B
UPC
817953027394
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Coupon Code
Purchase Limit Help

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Specifications
Barrel Contour:
Geissele
Item Height (Inches):
2.400
Barrel Length:
14.50
Color:
Black
Item Weight (lbs):
4.200
Item Length (Inches):
23.600
Cartridge:
5.56x45 NATO
Twist:
1-7
Item Width (Inches):
2.000
Finish:
Matte
Make Model Fit:
AR-15.Universal
Model Number:
Handguard Length: 13.5"
Receiver Style:
Complete
Restriction
Restricted Part:
Yes
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Description

The Geissele Super Duty Complete AR-15 Upper Receiver comes with more options than a 1970s Cadillac, including Geissele Sparkout Muzzle Device, Geissele's Super Modular Rail M-LOK® handguard, and their ambidextrous Airborne charging handle. A tooth in the top rear of the SMR handguard mates with a notch in the upper receiver to prevent unwanted handguard rotation that could compromise optic and/or backup sight alignment. Inside, the Super Duty Upper Receiver has Geissele's Reliability Enhanced Bolt Carrier Group (REBCG). The carrier is machined from extra-hard 8620 carbon steel with extended upper rails to ensure ultra-reliable feeding. (The chrome-lined gas key is, of course, "properly" staked.) The bolt itself is forged from Carpenter 158+ steel alloy, which is far stronger than standard Carpenter 158 for a service life up to 5 times longer than a plain mil-spec bolt. The strongest bolt and carrier in the world do no good if they're compromised by a failed cam pin, so the cam pin is machined from a medical-grade steel alloy called H13. The entire BCG is finished with Geissele's tough, chrome-nitride "Nanoweapon" finish that has a surface hardness similar to synthetic diamonds. Self-lubricating Nanoweapon is highly resistant to fouling and so is very easy to clean.

  • Complete AR-15 upper
  • Ready to install on a mil-spec lower
  • Chambered in 5.56 NATO (.223 Remington compatible)
  • Mid-length gas system
  • Pinned-on low-profile gas block
  • Super Modular Rail M-LOK handguard
  • Reliability Enhanced Bolt Carrier Group (REBCG)
  • Ambidextrous Airborne charging handle

Each Super Duty Complete Upper Receiver is fitted with a cold hammer-forged 14.5" carbine barrel manufactured by Geissele in their own factory in North Wales, Pennsylvania (not outsourced!). Chambered in 5.56 NATO, it has a chrome-lined bore and a phosphate exterior finish. The mid-length gas tube reduces the velocity of the gas for less violent, more reliable operation of the bolt/carrier group. The Geissele Super Gas Block is pinned to the barrel, so it's not going to move - no matter how many rounds you cycle through this bad boy!

Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.

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