Diamondback Firearms DB15 Combo 5.56 NATO/.300 Blackout Black Hard Coat Anodized AR-15 Rifle

A: Hi Joel and welcome. Yes, both uppers are included. This 5.56 NATO semi-automatic rifle also comes with a separate complete upper assembly that's chambered in the increasingly popular .300 Blackout caliber. You'll be able to quickly switch from one caliber to the other with ease by simply pushing out a couple of pins and popping the other upper onto the lower. Both upper assemblies feature 16" chrome moly barrels with black nitride finishes and 12" M-LOK handguards which allow for the easy addition of any M-LOK compatible accessories. Cheers!

A: Yes, you get both Uppers. Full description on both below. Diamondback Firearms DB15 rifle uses a gas-impingement system and high quality CNC machined components. Features a 4140 chrome moly barrel, A3 Flattop upper receiver, carbine length gas system, 12" M-LOK rail, MOE grip, A2 Flash hider muzzle and a Magpul MOE Carbine stock. Made in the USA. This model comes with a compatible upper assembly chambered for 300 Blackout. Diamondback Firearms Item Number: DB1721K001 Semi-Automatic AR-15 Rifle 5.56x45mm NATO (also accepts .223 Remington) 30 Round Magazine 16" Chrome Moly Steel Barrel, Black Nitride Finish Carbine-Length Gas System Forged Aluminum Lower Receiver Forged Aluminum A3 Flattop Upper Receiver Optics Ready 12" M-Lok Rail Mil-Spec Bolt Carrier Group Magpul MOE Pistol Grip Magpul MOE Carbine Stock Standard Trigger A2 Flash Hider Weight: 6.7 lbs Black Finish .300 Blackout Complete Upper Assembly Specs: Caliber: .300 AAC Blackout 16" Chrome Moly Steel Barrel, Black Nitride Fini

A: Joel, yes sir, you get both uppers, 5.56 and .300 Blackout. Stay safe & have a great day!

A: Erik, yes sir, the both barrels come with 12″ M-LOK Rail handguard. Stay safe & have a great day!

A: If you mean are the actual mlok connectors included that's a no. If you need them for any attachments here's a link to purchase separately. https://www.budsgunshop.com/product_info.php/products_id/30190/grovtec+rail+mlok+3.8+9+slot

A: Hi Erik and welcome. Yes, both have M-LOK Handguards. You will need various length M-LOK Picatinny Rails to add accessories. You can choose the lengths needed here : https://www.budsgunshop.com/search.php/q/m-lok+picatinny+rail+slots --- Cheers and stay safe!

A: they have M-lok rails on the foregrips

A: yes both barrels are 1/2x28 TPI see ** from DB site DB1721K001 MSRP: $1.059.00 UPC: 810035755079 Finish: Black Hard Coat Anodize Caliber: 5.56 NATO Barrel: Diamondback Barrels 5.56, 16″, Medium, 4150 CrMov, Black Nitride, 1:8 RH Gas System: Carbine-Length BCG: Shot-Peened, Magnetic Particle Inspected Mil Spec 8620 Carrier Upper: A3 Flattop Forged 7075 T-6 Aluminum, T-Marked Lower: 7075 T-6 Aluminum (DB-15 Carbon Lower) Handguard: 12″ PC M-LOK Rail Grip: MOE Grip Stock|Brace: MOE Carbine Stock Magazine: Gen3 PMAG 30 Round Sights: N/A *****Muzzle Device: A2 Flash Hider (1/2 x 28) Trigger: Mil-Spec Weight: 6.3 lb Overall Length: (Stock Collapsed 32 1/2″) (Stock Expanded 35 3/4″) Additional Upper Finish: Black Hard Coat Anodize Caliber: .300 AAC Blackout Barrel: Diamondback Barrels 16″, 4140 Chrome-Moly, Free Float, Black Nitride Gas System: Carbine-Length Upper: A3 Flattop Forged 7075 T-6 Aluminum, T-Marked Handguard: 12″ M-LOK Rail Magazine: 300 Blackout PMAG Sights: N/A ***Muzzle Devi

A: Hi Terry and welcome. The 5.56 barrel is Thread Pitch:1/2×28. The 300BLK (Threaded 5/8x24). Cheers and happy holidays!

A: james G not according to the diamondback site please show where you got the sizes according to diamondback they are both 1/2x28 see my answer

A: Not the same. .556 is 1/2x28. .300 is 5/8x24.

A: tom H not according to the diamondback site please show where you got the sizes according to diamondback they are both 1/2x28 see my answer

A: I would contact Diamondback to be sure https://diamondbackfirearms.com/contact/

A: My apologies. By model number the thread pattern is the same on this combo. 1/2x28 is correct.

A: All, 300BLK is 30 Caliber same as 7.62. Diamondback does not sell any 1/2x28 300BLK Barrels. Only 5/8x24 Barrels in 300BLK/.308. Contact them and when they let you know, just report back. I'm all in for correct information. Anyone can make a mistake. You, me, Diamondback as well. Either you or I will be conceding an apology my friend. Either way, cheers and happy holidays to all! DB made an error on their website (Similar package with correct specifications): https://diamondbackfirearms.com/portfolio/db15ccmlu300bfb/

A: james I agree it could be Diamondbacks mistake take care friend I did see that the ACC 300 package is the 1/2 by 24

A: No worries Randy my man. I like the fact that we keep each other honest Sir. Lol! Cheers my friend!

A: No worries Randy my man. I like the fact that we keep each other honest Sir. Lol! Cheers my friend!

A: No, just the complete upper. A duplicate BCG and charging handle aren't included as they interchange with the 5.56.

A: Hi Steve and welcome. No Sir, a single BCG is used for both 5.56/.223 and 300BLK since the 300BLK case is derived from the 5.56 case. Cheers, stay safe and enjoy! 300BLK is just a 5.56 case necked up to 30 Cal as shown here : https://www.fieldandstream.com/guns/300-blackout-vs-556/

A: Hi Steve, no extra BCG is included, or needed. The same BCG for the 5.56 is interchangeable with the 300 Blackout upper. Stay safe & have a great day!

A: Hi Santos and welcome. Yes, Magazines are the same for both calibers. Cheers, stay safe and enjoy! Additional magazines here: https://www.budsgunshop.com/product_info.php/products_id/1122/magpul+pmag+m2+moe+magazine+ar-15+.223+rem+5.56+nato+30rd

A: Hi Santos, you can use the same magazines, but for safety reasons, I would use a dedicated .300 Blackout magazine. This way you know exactly which caliber is in which magazine and you don't put the incorrect magazine into your gun. https://300arms.com/30-rnd-300-blackout-specific-magpul-magazine.html Stay safe & have a great day!