Aim7 Alpha-Alpha 1.125-28 BPISTIN Booster Assembly

Description 1.125-28 Booster Specs:  Overall length w/cap: 2.03″ Flange length: .5″ Flange diameter: 1.28″ Body diameter: 1.08″ Thread tenon length: .365″ Distance from flange shoulder to front of booster: 1.2″ Weight W/O Piston: 2.2 ounces Piston Compatibility This assembly accepts the following BPISTIN pattern pistons: ECCO Machine: All booster pistons SilencerCo: All booster pistons Kaw Valley Precision: All booster pistons Rugged: Obsidian 9 & 45 pistons Dead Air: Odessa Pistons OSS: Rad 9 & 45 pistons YHM: Current booster assembly pistons Griffin Armament: Cam Lok or EZ Lok pistons (SilencerCo/Rugged pattern) Alpha Accessory Compatibility The assembly also features female threads compatible with Alpha-pattern accessories, including: Griffin Cam Lok 1.125-28 Direct Thread adapter & Plan A Alpha SilencerCo AC2447 & AC2448 3-lug adapters, ASR Alpha, and Harvester 300 Direct Thread Q Plan B Alpha And other standard Alpha-pattern mounts Compatibility Notice: This list refers to piston compatibility, not suppressor models. If your suppressor has an integrated booster housing, this part is not required and will not fit. Versatile Connectivity: Our Alpha boosters feature female threading for Alpha-pattern accessories, including the Griffin Cam Lok 1.125-28, Griffin Plan A Alpha, SilencerCo 3-lug and ASR Alpha adapters, Q Plan B Alpha, and more. Important Restrictions: These boosters are not compatible with the PTR Vent 2. Please review the dimensions below carefully before ordering; we cannot accept returns for compatibility errors. ⚠️ Important Compatibility Warnings Check Dimensions: Please verify dimensions below before ordering to ensure fitment and avoid restocking fees. Exclusions: This booster is NOT compatible with the PTR Vent 2. Integral Housings: This item is NOT needed for (and cannot be installed on) suppressors that already have an integrated booster housing. PLEASE NOTE: Not compatible with the PTR Vent 2. Do not purchase this for suppressors with integrated booster housings; it will not fit. Please verify your dimensions below to prevent return shipping/restocking fees.  Material Overview: SUS303 Stainless Steel This muzzle brake is manufactured from SUS303 (equivalent to AISI 303), an austenitic stainless steel known for its ease of machining and corrosion resistance. Property Description Composition Fe, 17–19% Cr, 8–10% Ni, ~0.15% S, ~1% Mn Machinability Excellent (better than SUS304) Corrosion Resistance Good, slightly lower than SUS304 Tensile Strength Moderate (500–750 MPa) Weldability Poor (due to sulfur content) Magnetism Non-magnetic (annealed condition) SUS303 is a good choice for civilian semi-automatic rifles and moderate use, but it is not intended for extreme military-grade abuse.