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SI Defense 14.5" M4 barrel
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Our Price: $175.00
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Includes installed and pinned barrel extension., .750 diameter under the gas block, M4 barrel contour with cut for M203, button rifled with a 1/8 twist chambered in .223 Wylde, threaded 1/2 inch-28 muzzle for flash suppressor. Managanese phosphate coated per mil-spec. Weighs 1 lb 12.4 oz. 14.5" barrel length, not including barrel extension. Pin or weld flash suppressor/compensator and barrel is 16" in length.
Options: Barrel coated with graphite black Cerakote, add $125
416 Stainless steel barrel, add $75.
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SI Defense 16" M4 barrel
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Our Price: $175.00
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Includes installed and pinned barrel extension., .750 diameter under the gas block, M4 barrel contour with cut for M203, button rifled with a 1/8 or 1/9 twist chambered in .223 Wylde, threaded 1/2 inch-28 muzzle for flash suppressor. Managanese phosphate coated per mil-spec. Weighs 1 lb 12.4 oz.
Options: Barrel coated with graphite black Cerakote, add $125
416 Stainless steel barrel, add $75
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SI Defense 16" .300 Fireball Barrel
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Our Price: $175.00
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Great barrel for silencers! Make your AR-15 whisper quiet! Drop-in ready for your standard .223/5.56 upper receiver. Includes installed and pinned barrel extension., .750 diameter under the gas block, a 1/8 twist chambered in .300 Fireball (300/221), threaded 5/8 inch-24 muzzle for flash suppressor/silencer/compensator. Managanese phosphate coated per mil-spec. Weighs 1 lb 12.4 oz. 16" barrel length, not including barrel extension.
Options: Barrel coated with graphite black Cerakote, add $125
416 Stainless steel barrel, add $75.
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SI Defense 20" .223 Wylde Bull Barrel
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Our Price: $200.00
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Great barrel for varmint or bench shooting. Includes installed and pinned barrel extension., .936 diameter under the gas block, .920 from gas block to the muzzle. 1/9 twist chambered in .223 Wylde. Managanese phosphate coated per mil-spec.
Options: Barrel coated with graphite black Cerakote, add $125
416 Stainless steel barrel, add $75
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SI Defense 14.5" .300 Fireball Barrel
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Our Price: $175.00
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Limited run of barrels, only 5 in stock as of 8/17/2010!
Great barrel for silencers! Make your AR-15 whisper quiet! Drop-in ready for your standard .223/5.56 upper receiver. Includes installed and pinned barrel extension., HBAR profile contour, .750 diameter under the gas block, a 1/8 twist chambered in .300 Fireball (300/221), threaded 5/8 inch-24 muzzle for flash suppressor/silencer/compensator. Managanese phosphate coated per mil-spec. Weighs 1 lb 12.4 oz. 14.5" barrel length, not including barrel extension. All NFA rules apply. Carbine length gas system. Use of an adjustable gas block is highly recommended.
Options: Barrel coated with graphite black Cerakote, add $125
416 Stainless steel barrel, add $75.
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SI Defense 18" Stainless 6.8 SPC Barrel
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Our Price: $225.00
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416 stainless steel
Drop-in ready for your standard .223/5.56 upper receiver
Includes installed and pinned barrel extension
18" length
HBAR profile contour
.750 diameter under the gas block
1/11 twist
Chambered in 6.8 SPC
Rifle length gas port location
Pre-headspaced
Threaded with 1/2x28 for flash suppressor/comp
Options: Barrel coated with graphite black Cerakote, add $125
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SI Defense 20" Stainless .264 LB-CAR Barrel
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Our Price: $225.00
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416 stainless steel
Drop-in ready for your standard .223/5.56 upper receiver
Includes installed and pinned barrel extension
20" length
HBAR profile contour
.750 diameter under the gas block
1/8.5 twist
Chambered in 264 LB CAR
Rifle length gas port location
Pre-headspaced for a 7.62 x 39 bolt
Threaded with 1/2x28 for flash suppressor/comp
Great flat-shooting caliber! Can use Les Baer (LB) 264 CAR ammunition or 6.5 Grendel® ammunition
Options: Barrel coated with graphite black Cerakote, add $125
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SI Defense 24" Stainless .204 Ruger Barrel
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Our Price: $225.00
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416 stainless steel
Drop-in ready for your standard .223/5.56 upper receiver
Includes installed and pinned barrel extension
24" length
HBAR profile contour
.750 diameter under the gas block
1/12 twist
Chambered in 204 Ruger
Rifle length gas port location
Pre-headspaced
Threaded with 1/2x28 for flash suppressor/comp
Great flat-shooting caliber!
Options: Barrel coated with graphite black Cerakote, add $125
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