Faxon Firearms Sentry Modern Sporting 5.56 16" - AR-15 Rifle

SKU: FX5216
MPN: FX5216
Manufactured by Faxon Firearms

Out of Stock

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.

Out of Stock

Details

The Faxon Firearms Sentry Modern Sporting 5.56 16" delivers everything an AR-15 should — dependable 5.56 function, quality construction, and straightforward ergonomics — without asking you to pay for features you don't need.

A semi-automatic AR-15 rifle chambered in 5.56, the Faxon Firearms Sentry Modern Sporting 5.56 16" combines mid-length direct impingement operation with standard AR-15 architecture for straightforward reliability.

Reliable Function: A proven mid-length direct impingement operating system cycles a wide range of 5.56 ammunition reliably — the foundation of any dependable AR-15.

Practical Barrel Length: The 16" barrel strikes a practical balance between velocity, maneuverability, and overall weight — a versatile choice for both defensive and recreational use.

Full Aftermarket Compatibility: Standard AR-15 architecture means the full range of aftermarket components, optics, and accessories are available — configure this rifle exactly how you want it.

Durable Construction: Quality materials and a durable finish ensure this platform holds up under regular range use and long-term storage without degrading function or accuracy.

  • Caliber: 5.56
  • Barrel Length: 16"
  • Gas System: Mid-Length Direct Impingement
  • Handguard: M-Lok Free-Float
  • Muzzle Threading: 1/2x28
  • Magazine Capacity: 30-Round
  • Weight: 6.1 lbs
  • Finish: Type III Hardcoat Anodized
  • Origin: Made in the USA

Accepts all STANAG-pattern 5.56 magazines and pairs with any mil-spec AR-15 lower receiver. Compatible with standard carbine buffer systems and mil-spec lower parts kits.

The upper and lower receivers are constructed from 7075 aluminum with a Type III Hardcoat Anodized finish — a durable combination that resists corrosion and maintains tight tolerances over an extended service life.

A practical choice for 3-gun competition, recreational plinking, home defense, and general-purpose utility. Works equally well as a first AR-15 or as a quality addition to an existing collection.

Faxon Firearms is known first for their precision-machined barrels, which form the backbone of their complete rifles — purpose-built for accuracy-focused shooters who want quality from the ground up. Made in the USA.

Specifications

Accessory AttachmentM-LOK
ActionSemi-Auto
Barrel CoatingSalt Bath Nitride
Barrel ContourGunner
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandFaxon Firearms
Caliber Gauge5.56 NATO
ColorBlack
FinishHardcoat Anodized
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in Freefloat Rail
Magazine Capacity30
ModelSentry
Muzzle DeviceGriffin Armament M4SD FlashComp
Thread Pattern1/2 X 28
Twist Rate1:8
Weight6.1 lbs.