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Buffer tube assembly? Free float handguard? 12.5” 5.56x45

RRPlainsman

Joined: Oct 2015

Posts: 29

EE: 0% (0)

ND, USA

Posted: 2/23/2025 5:51:56 PM EDT

I am in the process of collecting all the parts to build a 12.5” 5.56x45mm pistol.

The barrel is a 12.5” Gunner from Faxon.

Which freefloat handguard would you recommend?

I plan on using either an SB-5 or SB-3 brace.

Which buffer, spring and tube would you recommend for the lower?

Thanks!

bluedog82

Joined: Aug 2019

Posts: 3077

EE: 100% (42)

MI, USA

Posted: 2/23/2025 7:57:54 PM EDT

[#1]

I’m a fan of the A5 system for buffer/tube/spring if not going adjustable gas. As for handguards, there are a lot of good options out there. I like the FCD on mine.

KILLERB6

Member

Joined: Jan 2002

Posts: 72732

EE: 100% (6)

USA

Posted: 2/24/2025 1:19:07 AM EDT

[#2]

What do you have for a lower?

I wanted a mission, and for my sins, they gave me one.
I love it. God help me, I do love it so. I love it more than my life.

RRPlainsman

Joined: Oct 2015

Posts: 30

EE: 0% (0)

ND, USA

Posted: 2/27/2025 11:22:57 PM EDT

[#3]

Ill be building a dedicated lower using a PSA frame.

JJL0325

Joined: Jun 2014

Posts: 2557

EE: 100% (217)

USA

Posted: 2/28/2025 7:26:10 PM EDT

[#4]

I have an FCD on my 12.5" and a Centurion on the wife's. Both are excellent handguards.

And I run carbine RE's on both. Sprinco Blue and H2 in mine and a standard carbine spring and H2 in the wife's

Both shoot excellent.

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Buffer tube assembly? Free float handguard? 12.5” 5.56x45

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Buffer tube assembly? Free float handguard? 12.5” 5.56x45

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Buffer tube assembly? Free float handguard? 12.5” 5.56x45