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Q&A for Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/Fixed Stock — 3 Questions & 3 Answers

Name Luth-AR .223 Bull Rifle Kit Minus Lower Receiver w/Fixed Stock (5)
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Q
Thomas, guest, from NJ, United States, asked on October 13, 2024

Is the barrel dimpled under the gas block for eady alignment of the gas tube allen set screw holes?

Manufacturer Answer
A
Answered by Luth-AR, Manufacturer from MN, United States, on December 05, 2024

The barrel is dimpled for the gas block set screws and is lined up and test fired from the factory.

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Q
Collins864, member, from SC, United States, asked on July 28, 2022

Will this also handle 5.56

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on August 08, 2022

The Luth-AR .223 Bull Rifle Kit is chambered in .223, and would not be able to fire 5.56 safely. With a 5.56 stamped barrel, you can fire both 5.56 and .223 safely. A barrel chambered/stamped in .223, can only use .223.

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Q
Ncorke, guest, from MI, United States, asked on July 18, 2022

This is chamberd in .223, will this safely fire 5.56mm since the bull barrel is able to withstand higher pressures?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on August 02, 2022

This Luth-AR .223 Bull Rifle Kit should not be used with 5.56. A barrel chambered in 5.56 can safely use both .223 and 5.56. The same applies for barrels in .223 Wylde. You can find out more from this how-to guide that explains the differences between 5.56 and .223:
https://www.opticsplanet.com/howto/223-remington-vs-5-56mm-nato-ammo.html

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Last updated 2025-11-12 UTC.