POTD: Brownells 12.5" Patrol Rifle Build

Holt Works Photography produces some amazing photographs. Today we have just one photo of a Brownells 12.5” patrol rifle build. Feeling like building something similar, or do you live in an area where there are barrel length restrictions?

Here are the rifle specs:

@bravocompanyusa 10” MCMR MLOK rail, short vertical MLOK grip and buffer tube
@vsevenweaponsystems titanium KMR barrel nut, KMR clamp blocks, grip screw, dust cover hinge pin, magazine release, end plate and castle nut and aluminum dust cover
@badgerordnance Condition ONE modular safety selector
@cmmginc lower essential pins and springs kit
@mean_arms titanium takedown and pivot pins
@forwardcontrols dimpled magazine release button, low drag dimpled forward assist and winter trigger guard
@reptiliacorp black QCG grip and MLOK QD Socket
@jprifles silent capture buffer
@griffinarmamentprecision SN-ACH charging handle
@geissele SSA-E trigger and maritime bolt release
@magpulcore SL-M stock and 30 rnd pmag w/window
@surefire_llc M600 scout light
@modlitesystems Legacy Enhanced spot light head and MODBUTTON light switch
@arisakadefense MLOK in-line scout light mount
@unitytactical FAST micro red dot mount and FAST Omni magnifier mount
@vortexoptics SPARC Solar red dot and Micro 3X magnifier
@superlativearms titanium adjustable bleed off gas block

Other parts in this build include:

@thoroughbred_armament upper receiver and C158 BCG
@lmtdefense Defender 2000 lower receiver from @thoroughbred_armament

@rosco_mfg K9 12.5” @sagedynamics 556 barrel
@rearden_mfg R2S flash hider/suppressor mount
@emissarydevelopment MLOK cable management
@hrfconcepts Ramp for the Modbutton
@blueforcegear black Vickers sling

What do you think is the most suitable barrel length for a 5.56/223 AR-15?

Photo and captions by Holt Works Photography. They can be found on Facebook and Instagram as Holt Works 2.0. Picture used with permission.