Tactical Shoooting Solutions are extremely proud to offer for sale in the UK, American Precision Arms Muzzle Brakes!


The development of APA Gen 3 Fat Bastard was the result of American Precision Arms' constant pursuit of breaking the mold and a desire to meet the demands of the Long-Range and Hunting markets.  APA has combined the standards of high-level performance and reliability with distinctive design enhancements to improve both accuracy and performance. These enhancements benefit the shooter experience at the range and in the field where every advantage matters.


The roots of the new Generation 3 version of the Fat Bastard lie in the requests of the elite long-range precision rifle community. APA's goal was to meet the needs of those shooters while also maintaining their standards of pristine manufacturing. Among the design, changes are three key features. The advanced Unique Recoil Profile tunable top port design allows the shooter to fine-tune the muzzle movement for absolute target retention.  In addition to that, the new lock nut design creates a zero overrotating platform. Last, is the addition of a fifth Bastard port section that eliminates even more recoil than before.




URP (Unique Recoil Profile) Top Ports

This allows the shooter to not only combat direct recoil but muzzle rise and lateral movement based on the characteristics of their rifle, personal grip, stance and the position they are shooting from.


We developed the U.R.P. Adjustable Gas System. These aren't just randomly placed top ports. Every port is placed adjacent to the internal Bastard tooth where there is maximum pressure build-up. This makes the adjustable ports directionally effective. 

The unique tunable gas system combined with the trademark APA ports work together to achieve a sight picture that moves less than ever before. There are 10 directional gas ports that can be tuned to counteract you’re U.R.P. (unique recoil profile).

 There are endless combinations to keep your sights on target. To calibrate the brake to your U.R.P., start testing with all the gas screws installed. Pay attention to the movement of your reticle, and begin removing the gas screws as the recoil requires.

 When the gas screws are removed on the right side, the rifle will be shifted left. For the opposite effect simply remove the screws on the left. The gas holes closer to the nut have a more dramatic effect and the ports closer to the brake crown have a lesser effect.  When you find your U.R.P. combination, Threadtite your screws into place.


*Please read additional infomation.

GEN 3 Fat Bastard Self Timing Muzzle Brake

  • Additional Row of Bastard Ports

    • For Added Recoil Reduction


    New Lock-Nut Design

    • Perfect Muzzle Placement

    • No Carbon Ring

    • No Over Rotation

    • Stronger Lock Up


    1.10" in Diameter, 3.5" In Length and Weighs 7.2 oz 

    Made for a barrel diameters of .850 or larger.

    The Gen 3 Fat Bastard can handle magnum cartridges.

    Available in 6mm, 6.5mm, .308 (7mm) & .338.

    Available in 5/8X24, 3/4x24, 18x1 & 18x1.5 thread patterns.

    Each brake includes set screws, one Allen wrench, and a single-use Threadtite.

  • The 1868, 1950 & 1978 Proof Acts

    Conversion of Barrels and the Fitting of Muzzle Attachments.

    The British Proof Authority wish to clarify the proof status of small arms converted to accept muzzle attachments and the proof requirements of the attachment.

    The following advice applies to cartridge operated small arms of all calibres, not including air weapons and their accessories.

    The gun trade and the public are advised that the barrel of any small arm previously proved but subsequently converted by screw cutting, or by any process of manufacture, or any other means whatsoever, to accept the fitting of attachments such as sound moderators, screw in choke tubes, muzzle brakes, etc., will require reproof prior to attempting to export, sell, exchange, pawn or pledge them whether or not the sound moderator or other attachment is attached to the barrel at the time. This is because the barrel is deemed to be unproved from the time when its conversion is begun, which occurs when it is converted from one sort of barrel to another sort of barrel (under s.115 of the Gun Barrel Proof Act 1868 as amended). Failure to submit a barrel for reproof in these circumstances is a criminal offence under s.122 (3) of the Act as amended.

    Under current Proof Legislation, the proof status of any muzzle attachment changes as soon as it is fitted onto the barrel of a small arm. Thereafter it becomes part of the barrel of a small arm and requires to be proof tested and marked accordingly prior to attempting to export, sell, exchange, pawn or pledge the attachment together with the small arm to which it has been fitted (see Section 4 of the 1868 Act and the 2006 Rules of Proof).

    * Note, the Permanent International Commission for Proof (CIP) advises that, under the Decisions of the CIP, the proof marks of a proven barrel subsequently threaded are invalid and the barrel is required to be reproved.

    TSS hold no respsiblity for Muzzle Brakes once they are fitted to a barrel (Warranty is still Valid). Users are requsted to seek proffesional advice when threading barrels and fitting muzzle brakes. These muzzle brakes are also not disigned or adapted to diminish the noise or flash caused by firing the weapon.