DoubleStar's 20" HBAR Flattop Upper starts with their 5.56 chambered 20" HBAR barrel made from 4140 chrome moly steel utilizing the Rifle gas system. This match barrel is attached to their flattop upper with their A-2 handguards. The upper is fully assembled and all parts are completely made in the USA.
Specifcations and Features:
Caliber: 5.56x45 NATO
Twist Rate: 1:9 Right Hand
Barrel Length: 20"
Barrel Type: Heavy Barrel
Barrel Material: 4150 Steel
Barrel Features: Black Nitride Finish, M4 Feed Ramps
Gas System: Rifle
Upper Receiver Type: Flattop
Upper Receiver Material: Forged Aircraft 7075 T6 Aluminum
Upper Receiver Features: "T"-Marks, Brass Deflector, Forward Assist, M4 Feedramps
Upper Receiver Coating: Anodized to Mil-Spec
Sight / Gas Block: "F" Marked Front Sight
Muzzle Device: A-2 Flash Hider
Handguard: Rifle Handguard
Made in the USA
Fits:AR-15 lower receivers
Specifcations and Features:
Caliber: 5.56x45 NATO
Twist Rate: 1:9 Right Hand
Barrel Length: 20"
Barrel Type: Heavy Barrel
Barrel Material: 4150 Steel
Barrel Features: Black Nitride Finish, M4 Feed Ramps
Gas System: Rifle
Upper Receiver Type: Flattop
Upper Receiver Material: Forged Aircraft 7075 T6 Aluminum
Upper Receiver Features: "T"-Marks, Brass Deflector, Forward Assist, M4 Feedramps
Upper Receiver Coating: Anodized to Mil-Spec
Sight / Gas Block: "F" Marked Front Sight
Muzzle Device: A-2 Flash Hider
Handguard: Rifle Handguard
Made in the USA
Fits:
1 Rating
Built for distance!
Went with the 20" barrel, for coyote hunting on the flats in Oklahoma, shooting a 69 grain hollowpoint!
March 3, 2022
Will this be a simple exchange with a Ruger AR556?
Answer:
Yes.
Can I put a bayonet on here?
Answer:
Yes the front sight has a bayonet lug.
Can I drop in some rails for this or is the grip unchangeable?
Answer:
Yes there are lots of upgrades that can be made to this.
What is the twist rate on the unit?
Answer:
Twist Rate: 1:9 Right Hand
Is this a compete upper with BCG and charging handle?
Answer:
No BCG or CH is included.
Does this also work with.223?
Answer:
Yes.