Hera Arms 18" Heavy Barrel — .223 Rem, 1:9 Twist, 5/8"x24 Threaded Muzzle (no gas hole for Straight-Pull AR15) with BCG
Everything the 18" target-crown variant offers, with a 5/8"x24 threaded muzzle for muzzle devices, brakes or suppressors. Button-rifled and heat-treated, finished black, and supplied with a matched CIP-proofed mil-spec BCG — ideal for builders who require a threaded muzzle for accessories on a straight-pull AR15 build.
£570.00 Inc. VAT
Why choose this barrel
Threaded muzzle for modular accessory fitment (brake, flash hider, suppressor adapter).
Heavy contour delivers enhanced rigidity for precision and sustained accuracy.
Delivered with a matched, CIP-proofed mil-spec BCG for guaranteed fit.
Technical specifications
Calibre: .223 Rem
Length: 18 inches.
Twist rate: 1:9 (stabilises typical .223/5.56 projectiles 55–69 gr).
Contour: Heavy.
Muzzle: 5/8"x24 threaded (factory).
Rifling: Button-rifled.
Heat treatment: Yes (factory heat-treated).
Finish: Black coating (standard).
Included: Matched, head-spaced and CIP-proofed mil-spec BCG.
Thread options
Muzzle thread: 5/8"x24 (standard for many .22/.223 suppressors & brakes).
Notes & fitment
Thread pitch 5/8"x24 is industry standard for many rimfire and .22/.223 accessories; ensure your muzzle device or suppressor adapter matches this thread.
Designed for straight-pull (bolt-action) AR15 systems or as a replacement barrel in compatible receivers. RFD delivery for gunsmith fitting.
In the United Kingdom, this item can only be purchased by a Registered Firearms Dealer or by an individual with a variation on their FAC.
Export of firearms and component parts require an approved UK export licence issued by the Department for International Trade.
Unless otherwise stated the price is for a single item, in one colour.
Dragonfly Ordnance accepts no liability for the use (or misuse) of this equipment.
Pictures are for reference; product delivered may differ slightly to that shown.