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These cookies ensure basic functionalities and security features of the website, anonymously. Visit: Necessary cookies are absolutely essential for the website to function properly. Farnam is happy to be your counselor and advisor. It is our duty to make you aware of certain unpleasant physical realities intrinsic to the Planet Earth. Defense Training International wants to make sure that their students fully understand the physical, legal, psychological, and societal consequences of their actions or in-actions. You should, of course, also decide what preparations you should make in advance if any. And at the rate we’re going, it will be yet another ten years before we get one.Ībout John Farnam & Defense Training International, IncĪs a defensive weapons and tactics instructor John Farnam will urge you, based on your own beliefs, to make up your mind in advance as to what you would do when faced with an imminent lethal threat. We desperately need a 300m auto-loading infantry rifle that shoots through-and-through things, and we haven’t had one since 1964.
#SUBSONIC 223 M4 ISSUES UPDATE#
The point is that this tardy update to the M4 rifle, even if it were implemented right now, is already thirty years late. There always are.Īnd, brass cartridge cases may be replaced with plastic! What could possibly go wrong? Even then, there will be inescapable start-up issues that cannot possibly be foreseen. To convert existing M4s to 6.8SPC, or this new round for that matter will require a new bolt carrier group, new barrels, new magazines, maybe new springs and buffers. There are those who are naively seeking a single cartridge that will run in short M4s, but also render adequate performance in “designated marksman” rifles, sniper rifles, GPMGs, and also be available in both supersonic and subsonic versions.Ĭan we “have it all” in the same cartridge? It isn’t physically possible. So does the 6.8SPC, which has been around and endlessly tested since 2004.ĭespite all our conversations on this subject, I suspect DOD will be continually fielding M4s in 5.56×45 for at least another 10 years. This new cartridge represents a ballistic performance improvement (improved range and penetration). Maybe there is some new metallurgy, similar to what POF uses on their Revolution Rifle (7.62×51), but otherwise, I see bolt-life issues with this new round. One issue with the 6.5Grendel (in heavy use in the M4 platform) has been chronic bolt breakage. The 6.5 Grendel case (and this is a new case) doesn’t leave much meat around the cartridge head on the existing M4 bolt.
An eighteen-inch barrel, maybe even a twenty-inch barrel, will likely be necessary to achieve reasonable ballistic efficiency. I don’t know the velocity, but I suspect something under 3k. HANDGUARD: MFR XL 6.The 6mm ARC is designed to run in existing in M4 rifle platforms.BUFFER: Maxim Defense Enhanced Buffer System.BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key.MUZZLE DEVICE: Daniel Defense Linear Compensator, 17-4 PH Stainless Steel, Salt Bath Nitride Finished.GAS SYSTEM: Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Pistol Length, Direct Impingement.BARREL: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:7 Twist, 7" S2W Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested.UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps.LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point.Independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters.Linear compensator directs muzzle blast forward of the shooter Muzzle threads (5/8-24) allow for muzzle device customization.Maxim Defense CQB Pistol Brace or CQB Gen 7 Stock (SBR) with enhanced buffer system functions reliably suppressed or unsuppressed.Ultra-compact platform with 7 inch, 1:7 twist barrel for compatibility with subsonic and supersonic loads.Please check with your local, state and federal agencies regarding the legality of use of this product in your area.
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