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Heckler & Koch (HK USA) HK51001919 MR762A4 Upper Kit 13" (Includes Bolt & Buffer, M-LOK) — 2 Pack

Heckler & Koch (HK USA) HK51001919 MR762A4 Upper Kit 13″ (Includes Bolt & Buffer, M-LOK) — 2 Pack

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Heckler & Koch (HK USA) MR762A4 upper receiver kit, SKU HK51001919, 13″ designation. Kit includes bolt and buffer and ships with an M-LOK handguard. Packaged as a 2-pack (Pkg Qty 2) in the Upper Receivers accessories category.

Sold by Each1 each = 2 eachPrice shown per each

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SKU: HK51001919 Categories: , , Brand: Product ID: 274536

Description

Description

Product Overview: Heckler and Koch (HK USA) HK51001919 MR762A4 Upper Kit (13″) is listed in Accessories > UPPER RECEIVERS. The product is sold as a pack of 2 and verified attributes note the inclusion of a bolt and buffer and an M‑LOK handguard (source_fact_ids: [“product-274536:f002″,”product-274536:f003″,”product-274536:f004″,”product-274536:f005″,”product-274536:f009″,”product-274536:f010″,”product-274536:f013″,”product-274536:f008”]).

Why This Product

  • Kit configuration verified: The listing explicitly records that the upper kit includes a bolt and buffer — important when planning assemblies or specifying replacement upper components (source_fact_ids: [“product-274536:f009”]).
  • Handguard interface: M‑LOK handguard is specified as the handguard type included with the upper kit (source_fact_ids: [“product-274536:f010”]).
  • Pack quantity: Supplied as a 2‑pack, relevant for ordering multiples for fleet or shop inventory (source_fact_ids: [“product-274536:f008″,”product-274536:f011”]).

Key Verified Specifications

  • Manufacturer / Brand: Heckler and Koch (HK USA) (source_fact_ids: [“product-274536:f002″,”product-274536:f006″,”product-274536:f007”]).
  • Category: Accessories; Accessory; UPPER RECEIVERS (source_fact_ids: [“product-274536:f003″,”product-274536:f004″,”product-274536:f005”]).
  • Includes: Bolt and Buffer (source_fact_ids: [“product-274536:f009”]).
  • Handguard Type: M‑LOK Handguard (source_fact_ids: [“product-274536:f010”]).
  • SKU: HK51001919 (source_fact_ids: [“product-274536:f013”]).
  • Package Quantity: 2 (source_fact_ids: [“product-274536:f008″,”product-274536:f011”]).
  • Availability status: instock (source_fact_ids: [“product-274536:f014”]).

Appropriate Use Cases

  • Procurement of replacement or spare MR762A4-style upper kits with M‑LOK handguards for fleet maintenance, armorer shops, or build projects (source_fact_ids: [“product-274536:f003″,”product-274536:f010”]).
  • Ordering multiple upper kits at once for assembly or bundling since the item ships as a 2‑pack (source_fact_ids: [“product-274536:f008”]).

What Customers Should Know

  • Confirm the 13″ MR762A4 designation, included bolt and buffer, and M‑LOK handguard match your technical and compatibility requirements before purchase (source_fact_ids: [“product-274536:f001″,”product-274536:f009″,”product-274536:f010”]).
  • Package Qty is 2 — verify ordering, receiving, and inventory procedures for 2‑pack kit shipments (source_fact_ids: [“product-274536:f008″,”product-274536:f011”]).

Specifications

  • Short Stroke Gas Piston Gas System (Rifle Length)
  • 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
  • 1:8 Twist Rate Rifling

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