Complete your Next Build with AT3’s Top-Selling Billet Upper Receiver and BCG plus the Trusted Breek Arms Warhammer Charging Handle
Save by bundling vs purchasing the parts individually, plus free shipping.
This kit contains 3 easy-to-install components – AT3 Slick Side Billet Upper Receiver, AT3 Black Nitride Bolt Carrier Group, and Breek Arms Warhammer Charging Handle.
- The AT3 Billet Upper Receiver – A unique slick-side upper receiver with dust cover, no forward assist, and matches perfectly with AT3’s SPEAR handguards with anti-rotation features.
- The AT3 Bolt Carrier Group – High-quality BCG for reliable function in your rifle. Durable, easy to clean, in Black Nitride or Nickel Boron finish.
- Breek Arms Warhammer Charging Handle – ultra-slick, ambidextrous charging handle that has thin, deep-set handles to ensure it doesn’t interfere with optics or backup sights, making for an even slicker experience than other handles out there.
Further details on each component below:
AT3™ Slick Side Upper | Billet Upper Receiver
Machined from billet aluminum, this unique slick-side upper receiver has no forward assist, includes a dust cover, and matches perfectly with AT3’s SPEAR handguards with anti-rotation features. This upper also features more material to surround your barrel extension than typical forged receivers, reducing flex and increasing precision. Matches with mil-spec lower receivers for a reliable fit. Made in the USA.
Features:
- M4 Feed ramps
- Standard .250″ takedown pin holes
- Low-profile brass deflector
- Includes dust cover
- No Forward Assist
Specifications:
- PLATFORM: AR15
- MATERIAL: 6061-T6 billet aluminum
- FINISH: Anodized Black
- COMPATIBILITY: Perfect match for AT3 SPEAR Handguards, standard AR15/M16 bolt carriers, charging handles, and some other handguards.
- WEIGHT: 7.1 oz
AT3™ AR-15 Bolt Carrier Groups – 5.56 NATO/.300 Blackout
Choose from Nickel Boron or Black Nitride Finish, MPI inspected bolt, properly staked grade 8 gas key screws, and a lifetime warranty. The black nitride finish features excellent hardness and lubricity, which means this BCG is durable, easy to clean, and less reliant on lubrication when compared to mil-spec phosphate coating. The bolt carrier group is the workhorse of your rifle, and a quality BCG is critical to reliable rifle function. Get a bolt carrier group that is guaranteed to last a lifetime. Made in the USA.
Specifications:
- Caliber: .223/5.56/.300 Blackout
- Finish type: Black Nitride or Nickel Boron
- Carrier Type: M16 Auto (Ideal for AR-15)
- Carrier Material: 8620 Gun Steel
- Gas Key Material: 4130 Steel
- Gas Key Screws: Grade 8
- Bolt Material: MPI tested 9310 Steel, Shot Peened
- Extractor Material: 4140 Steel
- Cam Pin Material: 8620 Steel
- Firing Pin Material: 4140 Steel, Chrome Plated
- Mil-Spec O-Ring and Gas Rings
- Weight: 11.5 oz.
Breek Arms WARHAMMER Mod 2 Ambidextrous Charging Handle
Truly ambidextrous charging handle with thin, deep-set handles to ensure it doesn’t interfere with optics or backup sights, making for an even slicker experience than other handles out there. There’s also a relief cut near the rear to divert pressurized gasses from the receiver away from your face, with a raised shelf at the back for more protection, making it ideal for suppressed fire. Constructed from 7075-T6 aluminum, and manufactured right in Minnesota.
Specifications:
- Material: 7075-T6 aluminum
- Finish: Type III hard-coat anodized
- Perfect replacement for any factory charging handle
- Latches are also 7075-T6 aluminum
- Oversize ambidextrous release levers on both sides, 2.78″ total width across the handles
- Set-Back Latches work great for large optics
- Allows for one-handed manipulation
- Higher Rear Shelf and Relief Cuts to Divert Suppressor Gasses
- Weighs in just under 1 ounce!
- No gunsmithing required
- Made in America
Products available on this page:
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Black, Bolt Carrier: Black Nitride | SKU: AT3-UPPER-BCG-WAR-KIT
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Flat Dark Earth, Bolt Carrier: Black Nitride | SKU: AT3-UPPER-BN-BCG-WAR-KIT-FDE
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: OD Green, Bolt Carrier: Black Nitride | SKU: AT3-UPPER-BN-BCG-WAR-KIT-ODG
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Tungsten, Bolt Carrier: Black Nitride | SKU: AT3-UPPER-BN-BCG-WAR-KIT-TG
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Burnt Bronze, Bolt Carrier: Black Nitride | SKU: AT3-UPPER-BN-BCG-WAR-KIT-BB
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Flat Dark Earth, Bolt Carrier: Nickel Boron | SKU: AT3-UPPER-NIB-BCG-WAR-KIT-FDE
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: OD Green, Bolt Carrier: Nickel Boron | SKU: AT3-UPPER-NIB-BCG-WAR-KIT-ODG
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Tungsten, Bolt Carrier: Nickel Boron | SKU: AT3-UPPER-NIB-BCG-WAR-KIT-TG
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Burnt Bronze, Bolt Carrier: Nickel Boron | SKU: AT3-UPPER-NIB-BCG-WAR-KIT-BB
- AT3™ Slick Side Upper with Bolt Carrier Group and Breek Arms Warhammer Charging Handle - Color: Black, Bolt Carrier: Nickel Boron | SKU: AT3-UPPER-NIB-BCG-WAR-KIT-BLK
