The DPMS GII AP4

Published on September 28, 2019
Duration: 15:34

This review of the DPMS GII AP4 highlights its design as a compact and lightweight .308 carbine, differentiating it from traditional AR-10 platforms. The video details proprietary components like the shorter receivers, bolt carrier group, and charging handle, explaining how these contribute to its reduced size and weight. It also covers internal modifications, such as the one-piece bolt carrier with a roll-pinned carrier key and the rubber buffer system for the extractor, designed to enhance reliability. Shooting impressions indicate acceptable accuracy for its class, though barrel heating can affect group consistency.

Quick Summary

The DPMS GII AP4 is a compact .308 carbine featuring shortened receivers and proprietary components like a one-piece bolt carrier group with a roll-pinned carrier key for enhanced reliability. Its extractor uses a rubber bumper instead of a spring for increased force and durability. While accuracy can be affected by barrel heat, the rifle offers excellent reliability and a competitive MSRP of $1499.

Chapters

  1. 00:03Introduction to DPMS GII AP4
  2. 00:35DPMS Gen 2 Design Philosophy
  3. 01:50Rifle Components: Stock and Receiver
  4. 03:42Barrel Specifications and Sights
  5. 04:29Internal Components: Buffer System
  6. 05:21Bolt Carrier Group (BCG) Analysis
  7. 06:02One-Piece Carrier Key Design
  8. 06:46Firing Pin and Bolt Examination
  9. 07:13Extractor Mechanism: Rubber Bumper
  10. 07:54Dual Ejector Design
  11. 09:36Upper Receiver and Charging Handle
  12. 10:02Handguards and Gas System
  13. 10:43Muzzle Brake Functionality
  14. 11:14Modularity and Customization
  15. 12:30Ammunition and Magazine Testing
  16. 13:00Accuracy and Grouping Results
  17. 13:34Overall Performance and Value
  18. 14:14DPMS Gen 2 Quality and MSRP
  19. 14:44Proprietary vs. Standard Components
  20. 15:20Conclusion and Call to Action

Frequently Asked Questions

What makes the DPMS GII AP4's bolt carrier group unique?

The DPMS GII AP4's bolt carrier group (BCG) is unique due to its one-piece construction. It features a stainless steel tube carrier key that screws directly into the bolt carrier and is secured by a roll pin, preventing gas leakage. This design is more robust than traditional methods where the carrier key is attached with screws.

How does the DPMS GII AP4's extractor system differ from standard AR-10s?

Instead of a traditional extractor spring, the DPMS GII AP4 utilizes a rubber bumper, similar to O-rings used on AR-15s. This modification is intended to increase extractor force and improve durability over time, offering a more robust extraction cycle.

What are the key design changes in the DPMS GII AP4 compared to older AR-10 models?

The DPMS GII AP4 features shortened upper and lower receivers, making it more compact and lightweight. This redesign necessitates proprietary components like the charging handle and bolt carrier group, differentiating it significantly from standard AR-10 platforms.

What is the typical accuracy and reliability of the DPMS GII AP4?

During testing, the DPMS GII AP4 achieved group sizes between 2.4 and 2.9 inches, though barrel heating could affect consistency. The rifle demonstrated excellent reliability, with no malfunctions reported after extensive testing with over 2,000 rounds.

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