By 1st Tactical Studies Group (1TSG) July 7, 2025 The U.S. ARMY and Marine Corps need a multi-caliber, Modular Weapon System (MWS) that can shoot all the major cartridges to meet the myriad of threats on the 720 degree, Non-Linear Battlefield (720 NLB) based on upgraded the combat-proven, M16/M4 rifle/carbine family whose manual-of-arms is in the muscle memory of every …

by Jim Jensen Assault Rifle/Carbine with interchangeable bolts, barrels and magazine wells can shoot 5.56mm, 7.62mm Russian, and 7.62mm NATO bullets Iraq: ”Ping” “ping” “ping” an U.S. Army light infantry Soldier firing from the top cargo hatch of a BAE Systems M113 APC (Armored Personnel Carrier)/armored vehicle is placing well-aimed 5.56mm (5.56x45mm/.223 Remington) M16A2/A4 rifle shots on an Iraqi rebel …

By David Crane defrev (at) gmail (dot) com July 27, 2011 DefenseReview first became aware of the TNW SGP-QCB (System Gas Piston-Quick Change Barrel) 5.56x45mm NATO (5.56mm NATO)/.223 Rem. gas piston/op-rod tactical AR carbine/SBR (Short Barreled Rifle) weapons/upper receiver assemblies in December 2009 in a NorthwestFirearms.com forum thread. We subsequently did some additional research on the system in early June …

By David Crane defrev (at) gmail (dot) com August 16, 2010 Updated on 8/21/10 DefenseReview (DR) has been publishing information on Spike’s Tactical products for a little while, now. Spike’s is a small company out of Apopka, Florida that puts together some nice select-fire and semi-auto-only tactical AR (AR15) carbine and SBR (Short Barreled Rifle) packages in various calibers. One …

by David Crane david at defensereview.com Small arms designer/developer J.D. Jones of SSK Industries has developed what may just prove to be a superior solution to the 6.8x43mm SPC (a.k.a. 6.8 SPC) and/or 6.5 Grendel (6.5x39mm) cartidges as a replacement for the 5.56x45mm NATO cartridge for U.S. military general infantry and Special Operations (USSOCOM) use. Mr. Jones is calling it …