More Than Complete Firearms... Parts to Build Too!

This guide outlines the process of assembling an AR-15 lower receiver. It details the installation of key components such as the bolt catch, magazine catch, pivot and takedown pins, safety selector, trigger guard, pistol grip, and buffer tube assembly. Proper installation of these parts is crucial for the firearm's functionality and safety.

This video provides an expert overview of CMMG's AR-15 lower parts kits, detailing the differences between their Premium, Gun Builder, Zeroed, and Zeroed Enhanced kits. It emphasizes choosing the correct kit size (AR-15 vs. .308/Mark III) and highlights options for users who want to supply their own grips or fire control groups. The guide covers basic assembly considerations for these kits.

This video details the build process of a custom AR-9 pistol, highlighting the FM Products side-charging upper and CMT billet lower. The presenter, Mrgunsngear, provides insights into component selection, assembly, accuracy testing with various ammunition types, and overall performance impressions. The build emphasizes modularity and common AR-15 platform compatibility while addressing specific AR-9 considerations like bolt compatibility and magazine choices.

This video from CMMG explains why their Dissent firearm platform is not compatible with most FRT (Forced Reset Trigger) or binary-style triggers. The primary reason is the Dissent's compact bolt carrier group, which lacks the necessary rearward mass and cut for sear engagement required by these advanced trigger systems. Standard AR-15 drop-in triggers are generally compatible, with the exception of the BR series. CMMG also details a sear trip accessory for their .22LR conversion kits designed for registered full-auto lowers, but cautions that compatibility with aftermarket binary triggers is not guaranteed due to varying geometries.

This guide clarifies the operational mechanics of the AR-15/M16 gas system, distinguishing it from true Direct Impingement (DI) systems. Drawing on Eugene Stoner's patents and visual evidence of components like the bolt carrier group, it explains the AR-15's internal piston design. The information is presented with high authority, referencing historical firearms and patent details.

This entry details the internal mechanics of the CMMG Dissent, focusing on its bufferless, side-charging operating system. The video highlights how the bolt carrier group slides on dual rods within the upper receiver, eliminating the need for a traditional buffer tube. This design is present in both the compact 5.56 and the larger BR3 variants, showcasing an innovative approach to AR-15 platform mechanics.

This video demonstrates the correct 'rock and lock' technique for inserting AK-47 pattern magazines into the CMMG Mk47 rifle. It highlights a common user error of 'mag-locking' by attempting AR-15 style straight insertion, which leads to malfunctions. The instruction emphasizes that mastering this AK manual of arms is crucial for reliable operation of the Mk47 platform.

This guide details the installation and function of the CMMG P3 (Personal Position Preset) Screw System. The P3 screw, found in the Zeroed grip's storage compartment, installs into the Fastback receiver extension. It allows users to set a predetermined stop position for adjustable stocks or braces like the RipStock and RipBrace, enhancing consistent shouldering. The guide includes specific tool requirements and adjustment methods for both the RipStock and RipBrace.

This guide details the installation and basic usage of essential AR-15 accessories, including slings, charging handles, handstops, triggers, flashlights, and optics, as presented by Mike from CMMG. It emphasizes proper fitment and function checks, while reinforcing that proper training is the most critical element for any firearm owner.

This guide details the installation of the CMMG .22LR Conversion Kit into a standard AR-15 platform. The process involves removing the existing bolt carrier group and inserting the conversion unit. The video emphasizes the cost-effectiveness of .22LR ammunition for training and introduces new shooters to the AR platform with reduced recoil. It also highlights compatibility nuances, particularly for Mk57 platforms.