Maxim Defense Industries — Standard Buffer with JP Silent Captured Spring (MXM-47570) — AR-15 — Black — Fits Only Maxim’s CQB Stock — UPC 680017475703
Meta (SEO) short description: Upgrade recoil control and smoothness in Maxim CQB-stocked AR-15s with the Maxim Defense Standard Buffer featuring the JP Silent Captured Spring (MXM-47570). Proprietary captured-spring system built to Maxim’s CQB stock interface — engineered for quieter operation, reduced spring slap, and long service life. UPC 680017475703. Maxim Defense
Product Overview — Purpose-built captured-spring performance
The Maxim Defense MXM-47570 is a Standard-weight JP Silent Captured Spring system packaged specifically for use with Maxim Defense’s CQB stock family. Rather than a loose buffer spring and separate guide, this captured-spring assembly holds the spring and guide in a single, self-contained unit that reduces spring slap, quiets cycling, and provides a more repeatable buffer return—especially on compact/pistol-length platforms using Maxim’s CQB stocks. This JP system is manufactured for Maxim Defense and intended to be used with their CQB stock designs. Maxim Defense
Key features & benefits (SEO keywords included)
Captured-spring design: The JP Silent Captured Spring contains the spring on a guide rod assembly so the spring cannot contact the receiver or cause audible “spring slap,” producing quieter and smoother action. This improves shooter perception and ergonomics on CQB/pistol builds. Global Ordnance
Standard / carbine weight: MXM-47570 is the standard-weight configuration intended to emulate normal carbine buffer timing when paired with Maxim’s CQB stocks (other weight options are available from Maxim’s product family). Impact Guns
Premium materials: JP captured systems use high-quality materials (tungsten/stainless variants in some JP systems and Maxim SKUs) for strength, low fatigue, and long service life under repeated cycling. Impact Guns
Cleaner installation & serviceability: Because the spring is captured, installation and removal are simplified versus loose-spring assemblies and there’s less risk of spring kinking or loss during maintenance. OpticsPlanet
Compatibility & critical fitment notes
Only for Maxim’s CQB stock family: This JP Silent Captured Spring assembly is produced exclusively for Maxim Defense to interface with their CQB stock systems — do not assume compatibility with other manufacturers’ stocks or non-Maxim buffer channels. Maxim Defense
Requires an open channel in the BCG: The captured spring system requires a bolt carrier group (BCG) that provides an open channel or cut path for the guide rod during cycling. Not all BCGs are prepared for this; the BCG must be compatible or modified by an authorized supplier (do not modify standard BCGs yourself). Palmetto State Armory
DO NOT modify a BCG to fit: Retail listings and JP/Maxim guidance caution users not to modify a BCG to accept the captured spring guide rod — modifying a carrier can compromise safety and function. If you need a compatible BCG, use a carrier that JP Enterprises or Maxim specifies as compatible. OpticsPlanet
What’s in the box & ordering info
Model / Part: MXM-47570 — Standard Buffer, JP Silent Captured Spring (Maxim OEM variant).
UPC: 680017475703 — use this UPC to verify listings and ensure you’re ordering the Maxim-specific JP captured spring kit. Global Ordnance
Typical contents: Captured spring assembly (guide rod + captured spring + buffer interface sized for Maxim CQB stock). Verify the retailer’s product page for exact package contents before purchase. Global Ordnance
Who should consider the MXM-47570
Owners of Maxim CQB/Gen-series stocks who want the quieter, more repeatable operation that JP’s captured spring systems provide. Maxim Defense
Builders running compact/pistol-length ARs where spring noise and harsh return feel are more noticeable and where a captured system meaningfully improves the user experience. Global Ordnance
High-round users and operators seeking improved spring longevity and less maintenance than loose spring assemblies typically deliver. Impact Guns
Installation & safety guidance
Fitment first: Confirm you have a Maxim CQB stock and a BCG that JP/Maxim lists as compatible (the BCG must have the required channel for the captured guide rod). If you are unsure, contact the retailer, Maxim Defense, or JP Enterprises for guidance. Palmetto State Armory+1
Professional help when needed: If your rifle’s BCG is not obviously compatible, don’t attempt ad-hoc modifications. A qualified armorer or an authorized JP/Maxim service provider can advise on acceptable, manufacturer-approved options. OpticsPlanet
Break-in & inspection: After installation, perform a function check and a controlled break-in (moderate round counts) to verify timing and ejection. Periodically inspect the captured assembly for wear, corrosion, or loosened components and service per manufacturer guidance. Global Ordnance
Maintenance & longevity
Captured spring assemblies are engineered to reduce spring fatigue and maintain consistent buffer timing longer than loose springs. Clean and lightly lubricate per Maxim/JD/JP guidelines, and replace the assembly if you detect loss of tension, corrosion, or physical damage. Using matching buffer weight and spring selection (as Maxim recommends for their CQB stocks) preserves optimal cycling characteristics. Impact Guns
Why choose Maxim’s MXM-47570 (SEO closing)
If you run a Maxim CQB stock and want a factory-matched solution for quieter, more repeatable cycling, the Maxim Defense MXM-47570 Standard Buffer with JP Silent Captured Spring delivers a purpose-built upgrade: proprietary captured-spring design, standard/carbine timing, premium materials, and cleaner installation and maintenance. Use model MXM-47570 or UPC 680017475703 when verifying retailer listings. Confirm BCG compatibility and consult Maxim or JP Enterprises for BCG options—do not modify a carrier yourself. Impact Guns+4Maxim Defense+4Global Ordnance+4
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