Accessory

    B&T Hush Puppy Kit (19X Compact + ACRO P-2 + Model 2 Suppressor): Accessory Compatibility & Upgrade Guide

    Product Compatibility Overview

    • Brief overview of the B&T Hush Puppy Kit 9mm Coyote 19X Compact Pistol w/ Aimpoint Acro P-2 & Model 2 Suppressor

      • This is a “ready-now” suppressed 9mm pistol package: a compact, striker-fired, polymer-frame pistol in a coyote finish with a factory-installed enclosed emitter optic (Aimpoint ACRO P-2) and an included B&T suppressor (B&T Hush Puppy Project Model 2 Suppressor).
      • Your core compatibility drivers are: (1) the pistol’s M13.5x1 LH barrel threads, (2) the optic’s ACRO footprint, and (3) the pistol’s weapon light rail (fitment varies by brand/attachment system).

    • Accessory mounting systems and compatibility standards

      • Muzzle / suppressor interface: The barrel is 13.5x1 LH (left-hand). This is common in many European 9mm threaded barrels and not interchangeable with 1/2x28 (common in the U.S.). Plan your pistons/boosters, thread protectors, and any muzzle devices accordingly.
      • Optic footprint: The Aimpoint ACRO P-2 uses the ACRO footprint and typically mounts either (a) direct to an ACRO-cut slide, or (b) via an adapter plate system depending on the slide/host interface. Aimpoint also sells a Glock MOS ACRO Mount Plate specifically for ACRO on MOS slides. (aimpoint.us)
      • Light rail: Expect best results with duty-grade lights that offer multiple mounting “keys” / rail interfaces. With compact pistols, check that the light’s bezel doesn’t extend past the muzzle excessively (especially with suppressor use) and that your holster selection matches the exact light.

    Essential Accessories

    • Must-have accessories for optimal performance

      • Thread protector (M13.5x1 LH): You want a quality protector for any time the suppressor is off—this prevents thread damage and helps maintain concentricity. Ensure it’s explicitly 13.5x1 LH (left-hand). (HK’s 13.5x1 LH protectors exist for their 9mm tactical barrels and match this pitch.) (gunmagwarehouse.com)
      • Spare magazines: Since the kit ships with 2 magazines, adding 2–4 more is the most practical “performance” upgrade for training and defensive readiness.
      • Spares and small parts kit: For a suppressed pistol, plan for higher round-count maintenance. Prioritize recoil spring assembly intervals, extractor-related spares, and optic mounting hardware spares.

    • Safety and security accessories

      • Quality, rigid trigger guard coverage (range bag / storage): If this will ever be stored with the suppressor mounted, ensure the setup is secured so the trigger is protected and the muzzle device isn’t leveraged against the case.
      • Weapon-mounted light (WML): If this is a duty/defensive-focused kit, a proven WML is a safety accessory—positive identification is non-negotiable.

    Optics and Sighting Systems

    • Compatible scopes, red dots, and iron sights

      • Your kit already includes a top-tier enclosed emitter: Aimpoint ACRO P-2. For most users, the best “upgrade” is not changing the dot—it’s improving mounting, backup irons, and maintenance practices.
      • Mounting plates (if applicable): If your slide uses an MOS-type interface rather than a direct ACRO cut, use a high-quality ACRO plate. Aimpoint offers an MOS ACRO plate and recommends certified gunsmith installation. (aimpoint.us)
      • Manuals / setup: Aimpoint publishes official manuals and guides (including ACRO support docs). Use these for torque/installation reference and maintenance intervals. (aimpoint.com)

    • Popular brands and specific model recommendations

      • Keep / baseline (already excellent): Aimpoint ACRO P-2
        • Why it’s valuable here: enclosed emitter durability matters more on suppressed pistols (blowback = more debris/soot); ACRO-style optics handle adverse conditions well.
      • If you ever need a replacement plate on MOS-interface pistols: Aimpoint Glock MOS ACRO Mount Plate
        • Why: OEM-matched geometry and support path directly from Aimpoint. (aimpoint.us)

    Tactical Enhancements

    • Rails, grips, and ergonomic improvements

      • Grip traction (low-profile): Suppressed pistols can be shot in gloves or wet conditions; stippling, grip tape, or texture panels can dramatically improve recoil control without changing the pistol’s mechanics.
      • Suppressor-height or optic-co-witness irons: If your current sights aren’t giving you a useful co-witness with the ACRO, upgrade to a set designed for your optic/plate height.

    • Lighting systems and laser attachments

      • Duty-grade WML recommendation (premium): SureFire X300U-A
        • Why it’s valuable: high output (1,000 lumens), proven durability, and manufacturer support. SureFire lists key specs and provides a user manual. (surefire.com)
        • Fitment note: rail interfaces can be finicky across pistols; confirm proper rail key selection and lockup before relying on it.
      • Mid-tier alternative: Streamlight TLR-1 HL (if you want strong performance at lower cost; verify holster availability and rail key fit on your specific frame).
      • Compact carry light option: Streamlight TLR-7A (often better for concealment than full-size lights; again, verify holster model and fit).
      • Lasers: For most serious users, I recommend prioritizing a WML + solid dot mounting over visible lasers. Lasers can help with certain training contexts and non-standard positions, but they add complexity and holster constraints.

    Performance Upgrades

    • Triggers, barrels, and internal components

      • Recoil system tuning (suppressed reliability): Suppressors increase backpressure and can change slide velocity. If you observe sluggish cycling or failures to return to battery, recoil spring tuning can help—but it’s platform-specific and should be done systematically (one variable at a time).
      • Barrel changes: Your barrel is already threaded M13.5x1 LH. If you ever replace it, keep the same pitch unless you’re willing to swap pistons/boosters and re-validate alignment.
      • Suppressor pistons / boosters: Many pistol suppressors rely on a Nielsen device (booster) and a piston that must match thread pitch. Ensure any replacement piston is explicitly 13.5x1 LH and intended for your suppressor model.

    • Professional installation recommendations

      • Optic/plate installation: If a plate is involved, follow manufacturer guidance and torque specs; Aimpoint explicitly notes gunsmith installation is recommended for their MOS ACRO plate. (aimpoint.us)
      • Any suppressor alignment concerns: Have a qualified armorer check alignment if you change barrels, pistons, boosters, or add any muzzle device.

    Holsters and Carry Gear

    • Compatible holster types and brands

      • Light-bearing holster (duty/OWB): Choose holsters indexed to the exact pistol + light combination. Many modern holsters index on the light body (common with X300/TLR-1 patterns), which can improve cross-compatibility.
      • IWB concealment: Expect compromises with a full-size WML and threaded barrel. If concealment is the priority, consider a compact light (e.g., TLR-7-size) and a holster built around that setup.

    • Concealed carry options and considerations

      • Suppressor carry: Carrying with a suppressor attached is generally impractical and may introduce legal/visibility issues. Treat suppression as a training, home-defense, or specialized-use configuration unless your mission requires otherwise.
      • Optic + WML + threaded barrel: This combination increases holster length and printing risk. A longer holster can also improve comfort (stability) for appendix carry, but you must pick a holster designed for the added length.

    Maintenance and Storage Accessories

    • Cleaning kits and maintenance tools

      • Suppressor-use cleaning approach: Suppressed pistols run dirtier. Plan for more frequent cleaning of the slide, extractor area, and optic lens. Keep a dedicated nylon brush set and non-marring picks.
      • Optic maintenance: Use lens-safe tools and keep a small lens cloth in the range kit.
      • Torque tools: A quality inch‑pound torque driver helps avoid stripped screws or sheared hardware on optics plates and mounting screws.

    • Storage solutions and gun safes

      • Suppressor-safe storage: If storing the suppressor mounted, ensure the case doesn’t apply side load to the can. Better practice is to store suppressor removed (cool and dry), with thread protector installed.

    Budget Considerations and Value Analysis

    • Essential vs. optional accessories priority list

      1. Essentials (best ROI): extra magazines, M13.5x1 LH thread protector, basic cleaning/maintenance kit, torque driver.
      2. Defensive essentials: proven WML + correct holster for that light.
      3. Nice-to-have: grip texture upgrades, upgraded irons tuned to your optic height, spare optic screws/plate hardware.
      4. Advanced / mission-driven: recoil system tuning, specialized suppressor accessories.

    • Best value recommendations for different budgets

      • Budget-conscious (lowest cost, highest impact): thread protector + mags + cleaning tools.
      • Mid-range: add Streamlight TLR-7A (or Streamlight TLR-1 HL) + holster.
      • Premium/duty: SureFire X300U-A + a proven duty holster + torque driver + spare mounting hardware.

    Installation and Compatibility Guide

    • Professional installation vs. DIY considerations

      • DIY-friendly: thread protector, mags, grip tape, routine cleaning.
      • Proceed carefully DIY: WML mounting (verify lockup), iron sight changes (requires proper tools), optic screw service if you have correct torque and threadlocker practices.
      • Prefer professional: optic plate installation (especially MOS plates), any internal trigger work, suppressor booster/piston swaps if you are not experienced.

    • Common compatibility issues and solutions

      • Wrong thread pitch parts: 13.5x1 LH is easy to mix up with 1/2x28. If it doesn’t thread smoothly by hand, stop—don’t force it.
      • Optic mounting failures: Most issues come from incorrect torque, improper threadlocker use, or mismatched screw length.
      • Suppressed cycling changes: If reliability changes suppressed vs. unsuppressed, address lubrication, ammo selection, recoil spring weight, and suppressor booster function in that order.

    Brand Recommendations and Reviews

    • Top-rated accessory manufacturers

      • Optic: Aimpoint ACRO P-2 (already included) with Aimpoint’s support ecosystem for manuals and mounting guidance. (aimpoint.com)
      • Weapon lights: SureFire’s X300 series remains a duty benchmark with published specifications and manuals. (surefire.com)
      • Mounting plates (if needed): prioritize OEM (Aimpoint) or proven duty-grade plate makers; avoid unknown soft hardware.

    • User reviews and professional assessments

      • The most consistent “professional” feedback pattern on enclosed-emitter pistol dots: reliability is excellent when mounting is done correctly (correct plate, correct screws, correct torque, correct threadlocker, and periodic inspection).

    Legal and Safety Considerations

    • Local and federal regulations for accessories

      • Suppressors: In the U.S., suppressors are regulated under the National Firearms Act (NFA). Ensure lawful possession/transfer, and be mindful of state/local restrictions and travel rules.
      • Magazine capacity: Some jurisdictions restrict magazine capacity—verify legality of 17-round magazines where you live and where you travel.
      • WML/laser use: Generally less regulated, but any “brandishing” or use-of-force considerations are legal/behavioral issues—training matters.

    • Safety requirements and best practices

      • Threaded barrel discipline: Always confirm the suppressor is tight (hand snug per manufacturer guidance) and check periodically during firing.
      • Heat management: Suppressors get dangerously hot quickly—use appropriate pouches/gloves and don’t reholster or bag a hot suppressor.
      • Optic/light checks: Function-check and re-verify zero after any disassembly, plate swap, or hard impact.

    Sources

    Aimpoint. "Glock™ MOS ACRO® Mount Plate." Aimpoint US Store. (Accessed 2026-02-26). https://aimpoint.us/glock-mos-acro-mount-plate/ Aimpoint. "Product manuals & guides." Aimpoint. (Accessed 2026-02-26). https://www.aimpoint.com/support/product-manuals-guides/ Aimpoint. "Manual Mounts." Aimpoint US Store. (Accessed 2026-02-26). https://aimpoint.us/manual-mounts/ SureFire. "X300U-A WeaponLight." SureFire. (Accessed 2026-02-26). https://www.surefire.com/x300u-a/ Heckler & Koch. "Thread Protector Cap 9mm for USP9, P30, VP9 Tactical - 13.5x1 LH" (product description/specs used only to verify M13.5x1 LH thread protector availability/fitment concept). Gunmagwarehouse. (Accessed 2026-02-26). https://gunmagwarehouse.com/hk-thread-protector-cap-9mm-for-usp9-p30-vp9-tactical-13-5x1-lh.html