// Firearms · M4 DI · Billet
SOTM4A5 Monobloc Billet Series
Rifles, short-barreled rifles and pistols on Second of Ten’s billet SOTM4 receivers, built around the HM Defense Monobloc® barrel with its gas block machined in. Every one below is in stock as photographed.
Complete rifles, short-barreled rifles and pistols on Second of Ten’s billet SOTM4 receivers, each built around an HM Defense Monobloc® barrel with the gas block milled into the barrel blank, and an SOT Enhanced HMB™ bolt carrier group. Every one here is in stock as photographed, with its own page, a zoom viewer, the full specification and a sell sheet.
//16″ Rifles
Five 16″ rifles on the SOTM4MOD1A5 and SOTM4MOD2A5 lowers, each with a different handguard, one with a chrome-lined bore.
//Short-Barreled Rifles
Three 14.5″ builds, including a RECCE on the SOTM4MOD1 RECCE lower, and a 12.5″ on a Law Tactical folder. State law on short-barreled rifles varies; check with your FFL before ordering.
//A5 Pistols
Two 12.5″ A5 pistols: one with an SB Tactical SBA5® brace, one with an SBA4® brace on a Law Tactical folder.
//Also in the M4 DI Series
The SOTM4A5 Monobloc Forged Series, the SOTM4MB-LW Monobloc® Light Weight and the SPIRE 6 in 6mm ARC and 6mm MAX. See every M4 DI variant →
HM Defense (Monobloc®, HMB™), LaRue Tactical, Geissele Automatics, Radian Weapons, Breek Arms, VLTOR, Forward Controls Design, B5 Systems, Magpul, Midwest Industries, Reptilia, Law Tactical, SB Tactical and Cerakote® (NIC Industries) are marks of their respective owners.
// Questions
Talk to us about this series
Tell us what you need and we will help you choose the right configuration.
Monobloc® and HMB™ are marks of HM Defense, LLC, used under license. Other product names are marks of their respective owners.
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