Ballistic Advantage 18 inch 5.56 SPR Rifle Length AR 15 Barrel w/ Ops 12, Modern Series

93 % of 100
Special Price $149.99 $175.00
In stock

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Don't see the exact configuration you want? No problem, just let us know. Most of the time we can customize with the parts we have just to your liking.


All our uppers have a Lifetime Warranty to the original purchaser. Some conditions apply - click here for details.

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We believe in customer service before and after the sale. We never take days or weeks to respond. Most of the time if you email or leave a message, we usually respond the same day or next business day.

Turnaround Time

Most of our uppers are built to order. Our most important goal is to get your order to you as quickly as possible without sacrificing quality. Please check the live status update on the banner above and/or on our homepage for current processing times.


We always specify the manufacturer of the major components therefore you know what you are getting. We only use quality components from well-known manufacturers.

Our 5.56 chambered 18 inch Government Profile Mid-Length Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

Weight 41oz
Length 18
Profile SPR
Twist 1:7
Finish QPQ Corrosion Resistant
Material 4150 CMV
Thread Pitch 1/2x28
Caliber 5.56 NATO
Feed Ramp M4
Flutes N/A
Gas System Rifle
Rifling Conventional
Gas Block System 0.750

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