BALLISTIC BBL 5.56 13.7″ MID GOV 1/7

Mid-length barrels strike a practical balance between velocity and handling, making them popular across rifle builds. The 13.7" profile delivers solid 5.56 performance without excess length or weight. If you're building or upgrading in the Concord area or beyond, TacticCAL handles FFL transfer in Sunnyvale for complete builds and component purchases.

Twist rate and velocity characteristics

The 1/7 twist stabilizes a wide range of 5.56 projectiles, from lighter 55-grain rounds through heavier match ammunition. At 13.7 inches, you lose minimal muzzle velocity compared to longer profiles while gaining maneuverability in tight spaces. Government-profile geometry remains standard across most upper receivers and handguards. For shooters exploring alternative firearm options, TacticCAL also stocks PC §32100 exempt revolvers alongside modern platforms. Browse our gun store.

Frequently asked questions

What's the practical difference between 13.7" and 16" barrels in real shooting?

The 13.7" loses roughly 50-100 fps compared to a 16" barrel, depending on ammunition. You gain easier handling in vehicles and indoor spaces. The velocity loss is negligible for target shooting and most defensive applications.

Does the 1/7 twist work with both light and heavy ammunition?

Yes. The 1/7 twist handles 55-grain rounds through 77-grain match loads reliably. It stabilizes the full practical range of 5.56 ammunition without overstabilization or accuracy loss.

How long is the California firearm waiting period?

California requires a 10-day waiting period from when DROS is submitted until you can take possession of the firearm. TacticCAL is your FFL dealer San Jose in the Bay Area.