AR-15 5.56/.223 16" Stainless Steel X-Treme Fluted Bull Upper Assembly – M-LOK

16" 5.56 Upper: Specs & Features

AR-15 5.56/.223 16" stainless steel x-treme fluted tactical bull upper assembly includes:

Barrel - 16" 416 stainless steel bull contour barrel with x-treme fluting. Hardened to 26-32 rc and stress relieved.  Chambered in 5.56 nato (also accepts .223 rounds). 1-9 rh twist 6 groove button rifled. .936 diameter under gas block. Target crowned. M4 feedramps.

A3 flat top upper receiver - made from certified 7075-t6 aluminum forgings. Black hardcoat anodized and teflon coated to gov. specs. Forward assist and dust cover installed. M4 feedramps.

Gas system - .936 low profile steel gas block and black hardcoat anodized. Carbine length gas system.

Handguards - 12" mid-length free floating mlok handguard. Made from aircraft quality aluminum and black hardcoat anodized.

Does not come with BCG and charging handle. Can be purchased separately. CA and NY compliant. Images may not be an exact representation of the product.

FAQ

Will this upper fit my AR-15 lower?

Yes. It fits any standard mil-spec AR-15 lower receiver and uses a standard 5.56 bolt carrier group and STANAG/AR-15 magazines.

Can I shoot both 5.56 NATO and .223 Remington?

Yes. A 5.56 NATO or .223 Wylde chamber safely fires both 5.56 NATO and .223 Remington ammunition.

Is a bolt carrier group included?

No. The bolt carrier group is sold separately; any standard 5.56 AR-15 BCG will work.

What twist rate does it use?

A 1:9 twist, best suited to 55 gr to 69 gr bullets.

Related: 5.56 NATO & .223 Wylde AR-15 uppers