Griffin Armament Mk2 11.5 AR pistol build and Dual Lock 5.56 suppressor

Key points: Griffin Armament Mk2 11

• The 11.5-inch barrel was chosen over a 10.3 as the trade she wanted for a home-defense rifle: enough velocity to keep some reach, short enough to stay maneuverable once a can is hanging off the end. It is chambered in .223 Wylde.
• Griffin engineers its own parts rather than assembling OEM components, and the suppressor-optimized buffer system is the argument for that — it controls bolt velocity, which she says cuts wear over time, assists extraction, and softens the gun to shoot.
• The adjustable gas block is not a multi-detent block you tune by watching extraction patterns downrange. A sliding regulator plate moves between a suppressed and an unsuppressed setting, which she calls the single friendliest thing on the gun for a newer builder.
• The SN-ACH charging handle (suppressor normalized ambidextrous) adds a rear shoulder and internal gas-check grooves to push blowback away from the shooter's face — the fix for what she describes as the gassy experience of a suppressed direct-impingement AR.
• The parts she swapped or added are all budget-conscious: a Shadow Systems crossover grip in the Atom texture replaced the factory grip purely because she dislikes finger grooves, and a SIG Romeo 4T on a Scalarworks riser stood in for an EOTech she decided she did not need.
• The Dual Lock 5.56 suppressor runs 11.8 ounces, 3D printed from a nickel 625-family superalloy borrowed from aerospace work, which she says buys more gas pathways, a better strength-to-weight ratio and fewer welded joints; it mounts by screwing on in the unlocked position and pressing a mechanical collar up and over.
• Frame this as a first-build showcase rather than a test: she is open that the channel let her try the parts before buying, the light pick leans on Classic Firearms' own low-light video, and the only endurance claim is thousands of rounds through the system with no failures described.

About this Gun Review video

Griffin Armament Mk2 11.5 AR pistol build: Classic Firearms host Eliza walks her first personal build part by part — why she picked the 11.5-inch barrel in .223 Wylde over a 10.3, how the suppressor-optimized buffer system and the sliding suppressed/unsuppressed gas regulator tune the platform as a package, and what the SN-ACH charging handle does about gas blowback. Then the add-ons she chose herself: SBA5 brace, Shadow Systems crossover grip, SIG Sauer Romeo 4T on a Scalarworks riser, Foxtrot MSR light, Wilder Tactical sling, and the 3D-printed Dual Lock 5.56 suppressor.

Transcript: Griffin Armament Mk2