Scheel Manufacturing Roller-Delayed Buffer System

    Scheel Manufacturing Roller-Delayed Buffer System (1)

    Scheel Manufacturing is a competition-oriented firearm parts and accessories manufacturer founded by competition shooter Corey Scheel. The latest and most interesting product of this company is a roller-delayed buffer system designed to convert blowback AR-pattern pistol caliber carbines into roller-delayed blowback operated ones. The Scheel Manufacturing roller-delayed buffer system has a pair of rollers on pivoting arms built into the buffer and roller recesses cut in the buffer tube.

    Delayed Blowback Guns @ TFB:

    Here is the description of this product as seen on the company’s website:

    Our Roller Delayed Blowback Buffer System was designed to solve many of the issues present in the world of Direct Blowback Pistol Caliber Carbine(PCC). Our Patent-pending adjustable lockup allows a lower reciprocating mass as well as lower recoil spring pressures to reduce the “dot bounce” effect that can occur with heavy mass and heavy spring pressures that hinder even the best blowback PCC setups. This “Lockup” keeps the action “locked” until the bullet is out of the barrel and chamber pressure is reduced preventing powder blowback and fouling in the firearms action. Currently blowback PCCs have a very narrow ammunition power-factor reliability window- they need to be setup for your specific ammo. Our RDBS runs great out-of-the-box with a wide variety of ammo from 115pf to 155pf and is tunable up or down from there.

    Any AR-pattern pistol caliber carbine chambered in 9mm, .40 S&W, or .45 ACP that has a mil-spec buffer tube can be retrofitted with the Scheel Manufacturing roller-delayed buffer system. This system is also rated to work with both hollow and solid bolts. According to the company, they currently have over 10,000 rounds through a carbine equipped with this system, with zero part failures.

    The Scheel Manufacturing roller-delayed buffer system is listed on the company’s website at an MSRP of $300. The package includes the following parts (per manufacturer):

    • Buffer Body – lockup rollers, arms and bumper installed
    • Pocketed Buffer Tube – 6-position Mil-spec diameter tube w/ lockup roller pockets
    • Buffer Springs – 4 weak and 4 strong buffer body springs for complete adjustability. 1 spare of each
    • Recoil Springs – 1 Lightweight Blue and 1 Extra Light White Recoil springs
    • Short-Stroke Bumper/Spring Keeper – Short stroke bumper prevents coil bind in the recoil spring

    Scheel Manufacturing Roller-Delayed Buffer System (2)

    It is interesting to observe how more and more companies explore delayed blowback actions for AR-pattern pistol caliber carbines in an effort to increase their efficiency, due to the limitations of the direct blowback action. Within the past year or two, there have been multiple releases of both complete AR-pattern or highly-AR-compatible guns that utilize delayed blowback actions (CMMG Banshee with radial-delayed blowback action, Angstadt Arms MDP-9 and JP Enterprises JP-5 with roller-delayed blowback actions) and products designed to convert existing direct blowback carbines into delayed blowback ones like the TACCOM delayed blowback recoil system with neodymium magnets and now the Scheel Manufacturing roller-delayed buffer system.

    Tell us in the comments section what do you think about this trend and delayed blowback PCCs in general.

    Pictures by Scheel Manufacturing,

    Hrachya H

    Managing Editor

    Being a lifelong firearms enthusiast, Hrachya always enjoys studying the history and design of guns and ammunition. He also writes for and
    Should you need to contact him, feel free to shoot him a message at [email protected]