CT4-2A 5.56

CT4-2A .300BLK

CT4-2A 9mm

DLD CT4-2A Firearm Specs & Parts List


  • LOWER RECEIVER: Billet 7075-T6 Aerospace Grade Aluminum.

  • UPPER RECEIVER: Billet 7075-T6 Aerospace Grade Aluminum.


  • CERAKOTE: We stock 95% of all Cerakote Colors. Multicam / Distressed / Battleworn / Custom Patterns & Designs available as an Upgrade.

  • BARREL: 4150 CMV SBN Match Grade w/ M4 Feed Ramp / Upgrade to DLD Krieger Barrel Available.

  • GAS SYSTEM: Low Profile Fixed SBN Treated 4140 Steel: Upgrade to our Low Profile SBN Adjustable Gas Operating System.

  • MUZZLE DEVICE: DLD SBN Flash Hider. Upgrade to AAC, Gemtech, Dead Air, Surefire, or ThunderBeast Silencer QD Brake.

  • BOLT CARRIER GROUP: DLD National Match Grade - Carrier Body 8620 Steel Black Nitride & Heat Treated Steel / 9310 Steel Heat Treated Bolt / 17-4 Stainless Steel Black Nitride Firing Pin / Proprietary Tool Steel Cam Pin.

  • CHARGING HANDLE: MILSPEC / Tactical Extended Latch / Raptor-LT / Raptor / Raptor-SD.

  • BUFFER: Carbine 3oz with available upgrade to Tungsten H2 or H3 Buffer Available.

  • SIGHTS: Iron Flip Up Sight Set with available upgrade to Magpul PRO Adjustable BUIS Available.

  • HAND GUARD: DLD Billet M-LOK Free Float, 10”,13”, 15”, 18” Available.

  • RECEIVER EXTENSION: Unique Extrusions Spineless Pistol Tube / MIL-SPEC 4 or 6 Position / 6 Position .308 Elongated Tube / Dry Film Lubricated. 

  • IN PLACE OF BUTTSTOCK “BRACE”: We exclusively use SB Tactical Products. Our standard models come equipped with the SBM4 Brace. We also stock the Adjustable SBA3 / SBA4 / SBPDW  Braces as an available upgrade. (Gear Head Braces can be special ordered)

  • PISTOL GRIP: Mission First Tactical EPG / Magpul MIAD / Ergo Deluxe Tactical Grip / Hogue Grip all available. 

  • VERTICAL GRIP: Mission First Tactical SVG Standard. Arisaka or Fortis Billet Aluminum M-LOK Vertical Grip available as an Upgrade. 

  • TRIGGER: Schmid Enhanced MIL-SPEC High Polish Steel Trigger, Upgrade to Geissele or DLD Proprietary Adjustable and Non Adjustable Triggers Available, choice of Flat or Curved and comes with KNS Anti Walk Trigger Pins.

  • Comes with Nylon Rifle Case, One 10 Round Magazine, and 1 Section of Picatinny Rail. 

  • Each and Every Single Rifle is Hand Made in the USA! No Less than 3 Gunsmiths have their eyes and hands on our Rifles as they are meticulously crafted from the ground up. Every rifle receives unparalleled personal attention and safety inspection.


  • Manufacturing SKU#: DLD-CT4-2A 

  • SHIPPING: Anywhere but California and Massachusetts. 

  • Calibers of Choice: .223Rem/5.56NATO, .300BLK, 9mm, 7.62x39mm, 7.62NATO, 6.5Creedmoor, .260Remington, .224Valkyrie, .50Beowulf.

  • Muzzle Thread: 1/2x28, 5/8x24.

  • Gas System: Pistol - .300BLK / Carbine - 5.56NATO, Mid Length and Rifle Length Available.

  • Barrel Profile: Proprietary / GOV’T or SOCOM Profile.

  • Firearm Weight: 4.5 - 6.5 Pounds.

  • Overall Length: Minimum of 31”.

  • Magazine: Lancer, Magpul, Glock.

  • Manufacturer: Delta Level Defense, LLC.



*Accessories Not Included.



30 November 2017


RE: DLD CT4-2A ATF Variance Approval

To Whom It May Concern:


On 21 September 2017 Delta Level Defense, LLC  filed the formal paperwork with the ATF and the ATF Firearms Technology branch to manufacture a new model of firearm. The exact model of this new firearm is the CT4-2A, the new serial number sequence on file with both branches of the ATF is CT001 through CT9999. We filed a second variance to allow the receiver of the new firearms to be both a specific 9mm, as well as 5.56 & .300BLK. The ATF made the ruling that the 9mm receivers need to be marked specifically 9mm, and the 5.56 & .300BLK are to be marked “Multi”.


On 29 October 2017, Michael R. Curtis, Chief FTISB of the ATF, approved our entire lot of variance paperwork. Our official ATF Variance Control Number is 17-00898.


Additionally, Delta Level Defense, LLC has sent a prototype to the ATF’s Technology Branch for further classification and official categorization.


Should you have any further questions, concerns and or comments please do not hesitate to contact me directly.



Very Respectfully,

Ryan J. Gisolfi, C.P.S. & President

Delta Level Defense, LLC


23 December 2017


RE: Definition of an Assault Weapon / Specifications Defining DLD CT4-2A as an OTHER FIREARM

To Whom It May Concern:


The State of Connecticut’s/ State of New York’s Department of Special Licensing and Firearms Unit defines an Assault Weapon as the following:

Any semi-automatic centerfire rifle, regardless of the date produced, that has the ability to accept a detachable magazine and has at least one of the following features:  1) A folding or telescoping stock; 2) Any grip of the weapon, including a pistol grip, thumbhole stock, or other stock that would allow an individual to grip the weapon, resulting in any finger on the trigger hand in addition to the trigger finger being directly below any portion of the action of the weapon when firing; 3) A forward pistol grip; 4) A flash suppressor; or 5) A grenade or flare launcher. A semiautomatic, centerfire rifle that has:  1) a fixed magazine that can accept more than 10 rounds of ammunition; or 2) an overall length of less than 30 inches.


Furthermore, the ATF Defines an “AOW”, Any Other Weapon, as:

 Any weapon or device capable of being concealed on the person from which a shot can be discharged through the energy of an explosive; ​A pistol or revolver having a barrel with a smooth bore designed or redesigned to fire a fixed shotgun shell;​ Weapons with combination shotgun and rifle barrels 12 inches or more, less than 18 inches in length, from which only a single discharge can be made from either barrel without manual reloading; and Any such weapon which may be readily restored to fire.

The CT4-2A DOES NOT under any circumstance fall under the definition of either an Assault Weapon or an AOW. Below are the follow characteristics defining the CT4-2A as an “OTHER FIREARM”.

  1. Is NOT a Rifle as it does not have a buttstock. Features a spineless cylindrical tube that does not allow for any rifle buttstock to ever attach.

  2. Is NOT a Pistol as it has a Forward Vertical Grip.

  3. Is NOT a Pistol SPECIFICALLY under CT/NY Law as the MINIMUM barrel length is 12.5”. CT Defines a Pistol as have a barrel length of 12” or Shorter,

  4. Is NOT an AOW, as it over 26” in overall length, and features a vertical forward grip.

Should you have any further questions, comments and or concerns, please do not hesitate to contact us directly. Do not contact your retailer.




Ryan J. Gisolfi, C.P.S. & President

Delta Level Defense