I just picked up a Sig 556 Rifle. I’ve been thinking about a 12.5" ABR and I saw that a guy on another board SBR’d his (Form 1) to 12.5". Looks pretty cool. Wondering If I should do the same rather than SBR another AR, already got a From1 in for a SBR AR (10.5").
No Bananas,
If the weapon will still function reliably after chopping the barrel then I’d say hell yeah, chop it! I’m not terribly well versed in the Sig rifles though so you might want to seek some advice from someone who has firsthand experience with them.