Del-Ton Sierra 316L AR-15 Rifle 5.56 - MLOK - 16"

Manufactured by Del-Ton
Manufactured by Del-Ton
1 Review

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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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



The Del-Ton Sierra 316L is an optics ready AR-15 rifle chambered 5.56 NATO with a 16 inch lightweight profile Chrome Moly Vanadium barrel with a 1 in 7 rate of twist, 1/2x28 thread pattern with flash hider, Manganese phosphate finish, M4 feed ramps, and a full length 15" M-LOK handguard with ample room for mounting crucial accessories. The Del-Ton Sierra 316L is an excellent contender for best bang for the buck AR-15. This lightweight modern sporting rifle weighs in at only 6.2 pounds, leaving the user with plenty of flexibility when choosing accessories, optics, and even upgraded furniture. The mid length gas system of this AR-15 rifle offers a more comfortable and reliable shooting experience, and easily fits under the full length free-floated handguard. Features an 8620 Phosphate BCG, staked gas key, and a set of matched 7075 T6 upper and lower receivers.


  • 5.56 NATO AR-15 rifle
  • Chrome Moly Vanadium Steel barrel
  • Manganese Phosphate finish
  • Mid-Length gas system with low profile gas block
  • 1:7 twist rate and M4 feed ramps
  • A2 flash hider with 1/2x28 thread
  • 15" free float M-LOK handguard
  • 8620 steel bolt carrier with Phosphate finish
  • Chrome lined inside the BCG
  • Staked gas key with grade 8 screws
  • Forged 7075-T6 aluminum receivers
  • Black hardcoat anodized
  • Flat top upper ready for optics
  • Mil-Spec parts kit and trigger
  • M4 carbine stock and 5 position tube
  • Includes 30 round magazine
  • Weighs only 6.2 lbs
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Barrel CoatingManganese Phosphate
Barrel ContourLightweight
Barrel Length16
Barrel LiningManganese Phosphate
Barrel Material4140 Chrome Moly Steel
Caliber Gauge5.56 NATO
FinishHardcoat Anodized
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Magazine Capacity30
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7
Weight6.2 lbs.
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

1 review

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Great gun accurate light nice great price


Great looking gun. Mlok system awesome. great attach points. shoot fantastic smooth. Can't go wrong with the price. Light gun very nice would recommend