Q&A for SIG SAUER Cal-x Kit, Sigmcx, 5.56 Nato, 9in, Lt, W

SIG SAUER Cal-x Kit, Sigmcx, 5.56 Nato, 9in, Lt, W

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SL1200, member, from CA, United States, asked on August 14, 2025

can I install this on a mcx virtus?

Answered by Rob, member, from FL, United States, on December 01, 2025

were about to find out. I ordered the mcx virtus cal exchange kit that was supposed to have the bolt and taper ring and this is what was sent. I asked about the missing parts and they just gave me sigs phone number. ill come back and reply whether it works or not tonight when I try to install it.

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Jamie Kraft, member, from FL, United States, asked on March 05, 2025

Not quite understanding why this barrel is restricted. Civilians have access to the smaller and larger versions. This is the only length we can't get.

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SicEm, member, from TX, United States, asked on January 16, 2025

What is the barrel thread on this? Also, is this a typo? Is it a spear Lt barrel in 5.56?

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More Deals

Q&A for SIG SAUER Cal-x Kit, Sigmcx, 5.56 Nato, 9in, Lt, W — 3 Questions & 1 Answers

can I install this on a mcx virtus?

Not quite understanding why this barrel is restricted. Civilians have access to the smaller and larger versions. This is the only length we can't get.

What is the barrel thread on this? Also, is this a typo? Is it a spear Lt barrel in 5.56?

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Q&A for SIG SAUER Cal-x Kit, Sigmcx, 5.56 Nato, 9in, Lt, W — 3 Questions & 1 Answers

can I install this on a mcx virtus?

Not quite understanding why this barrel is restricted. Civilians have access to the smaller and larger versions. This is the only length we can't get.

What is the barrel thread on this? Also, is this a typo? Is it a spear Lt barrel in 5.56?