Faxon Firearms Sentry Modern Sporting Rifle 5.56 - 16"

Manufactured by Faxon Firearms
SKU: FX5216
MPN: FX5216
Manufactured by Faxon Firearms
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NOTE: Limit 5 per household. Quantities exceeding 5 will not allow checkout.

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



The Faxon Firearms Sentry 5.56 AR-15 Rifle is designed for the experienced AR buyer that is looking for a feature rich product that doesn’t cut any corners. The Sentry Modern Sporting Rifle is built around the forged aluminum receiver set with enhanced features like a tensioning screw to eliminate wobble between the upper and lower receivers. The barrel is 16” long with a Gunner profile and a durable black Nitride finish. The M16 style bolt carrier group also features the same black Nitride finish. The 15” free float handguard fully covers the mid-length gas system and features M-LOK attachment slots for a full range of customization options. Part of the Summit series, this rifle is fully featured with high quality aftermarket parts like a Hiperfire trigger, Raptor LT charging handle, Griffin Armament comp, and Magpul furniture.

  • 16” barrel chambered in 5.56
  • Gunner profile with Nitride finish
  • Mid-length gas system
  • M16 BCG with Nitride finish
  • Forged aluminum receivers
  • Receiver tensioning screw
  • 15” M-LOK free float handguard
  • Hiperfire EDTDM single stage trigger
  • Radian Raptor LT ambi charging handle
  • Radian Talon Ambi 45/90 degree safety selector
  • Magpul MOE SL carbine stock
  • Magpul MOE grip
  • Griffin M4SD FlashComp
  • Weight: 6.1 lbs.

Faxon Machining engineers and manufactures components that are found everywhere. In theaters of combat, on the ocean floor, in cars, in aircraft, on the ISS, and on Mars. Now, they bring their engineering excellence to bear on providing new and innovative components for the AR-15 platform that set the standard for quality. Faxon Firearms, manufacturing strategic solutions for tactical problems.
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Barrel CoatingSalt Bath Nitride
Barrel ContourGunner
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandFaxon Firearms
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceGriffin Armament M4SD FlashComp
Thread Pattern1/2 X 28
Twist Rate1:8
Weight6.1 lbs.

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