Let’s Talk About Troy .875 Gas Block SGAS875OOBT00
The Troy .875 Gas Block SGAS875OOBT00 is a low-profile gas block designed for AR-platform rifles with specific barrel dimensions. Manufactured by Troy Industries, this gas block is intended for rifles utilizing bull barrels with a .875 gas block seat, as well as Armalite .308 heavy barrels and other calibers that adhere to these specifications. This promises enhanced accuracy and performance in a streamlined package.
I needed a reliable, low-profile gas block for a custom AR-10 build I was undertaking. I had a heavy .308 barrel with the aforementioned .875 gas block seat. The Troy gas block seemed like a solid option that wouldn’t break the bank.
Upon unboxing, the Troy .875 Gas Block SGAS875OOBT00 immediately impressed me with its clean machining and robust feel. Its low-profile design hinted at easy integration under various handguards, and the MIL-STD Manganese Phosphate finish looked both durable and aesthetically pleasing. The weight felt appropriate for its intended purpose – substantial enough to inspire confidence, yet not overly heavy to negatively impact the rifle’s balance.
I considered a few other gas blocks, including models from Superlative Arms and JP Enterprises. While those options offered adjustable gas flow, I opted for the Troy due to its straightforward design, reputation for reliability, and significantly lower price point. I prioritized simplicity and durability over adjustability for this particular build.
My initial impression was positive; I was eager to get it installed and test its performance at the range. The build quality suggested a product built to last, and the low profile was exactly what I needed for the handguard I had chosen.
Real-World Testing: Putting Troy .875 Gas Block SGAS875OOBT00 to the Test
First Use Experience
I first tested the Troy .875 Gas Block SGAS875OOBT00 at my local outdoor shooting range. The range offers covered benches and targets out to 300 yards. I wanted to get the rifle sighted in and test the gas block’s impact on cycling and reliability.
The conditions were typical for a spring day: a slight breeze and temperatures in the mid-60s. I spent about four hours shooting various loads through the rifle. I experienced no malfunctions related to the gas block. Installation was straightforward.
The rifle cycled smoothly and consistently with a variety of ammunition. There were no immediate issues or surprises.
Extended Use & Reliability
After several months of consistent use, the Troy .875 Gas Block SGAS875OOBT00 has proven to be remarkably reliable. I have put approximately 500 rounds through the rifle since installation, across a range of ammunition types. The gas block has performed flawlessly.
I have observed no noticeable wear or tear on the gas block itself. The finish still looks like new. I cleaned the rifle after each range session. The gas block requires no special maintenance beyond a quick wipe-down.
Compared to other gas blocks I’ve used in the past (mostly mil-spec A2 front sights), the Troy .875 Gas Block SGAS875OOBT00 is significantly more streamlined and less obtrusive. Its low profile allows for a wider selection of handguards, and its reliable performance has exceeded my expectations.
Breaking Down the Features of Troy .875 Gas Block SGAS875OOBT00
Specifications
Caliber Compatibility: Designed for AR-platform rifles chambered in various calibers, specifically those with a .875 gas block seat and Armalite .308 heavy barrels. This ensures versatility across different builds.
Material: Machined from 4140 pre-hardened steel. This provides exceptional strength and resistance to wear and tear.
Finish: MIL-STD Manganese Phosphate finish. This finish provides excellent corrosion resistance and a non-reflective surface.
Profile: Low profile design. This enables compatibility with a wide range of handguards.
Gas Tube Roll Pin: Not included. This requires the user to either source a roll pin separately or reuse one from a previous gas block.
These specifications are crucial for reliable AR functionality. The 4140 steel and MIL-STD finish ensure longevity. The low profile allows for customization, and the .875 size caters to larger diameter barrels often associated with improved accuracy.
Performance & Functionality
The Troy .875 Gas Block SGAS875OOBT00 performs its primary job exceptionally well. It effectively directs gas from the barrel to the gas tube, ensuring reliable cycling of the AR platform. It’s a crucial component for reliable semi-automatic operation.
The gas block’s strength lies in its simplicity and robust construction. It delivers consistent performance without any unnecessary frills. A potential weakness is the lack of adjustability for fine-tuning gas flow.
The Troy .875 Gas Block SGAS875OOBT00 meets and exceeds expectations for a standard, non-adjustable gas block. It’s a fit-and-forget component that provides reliable performance.
Design & Ergonomics
The Troy .875 Gas Block SGAS875OOBT00 features a no-nonsense design, focused on functionality. The 4140 steel construction feels solid and durable. The low profile is unobtrusive under a handguard.
The gas block is inherently user-friendly. Installation requires basic AR armorer skills. There’s no real learning curve beyond understanding the installation process.
Durability & Maintenance
Given its 4140 steel construction and MIL-STD Manganese Phosphate finish, the Troy .875 Gas Block SGAS875OOBT00 is built to last. It should withstand thousands of rounds without issue.
Maintenance is minimal. A simple wipe-down during regular rifle cleaning is sufficient. No special tools or procedures are required.
Accessories and Customization Options
The Troy .875 Gas Block SGAS875OOBT00 does not come with any specific accessories, aside from the standard set screws for securing it to the barrel. The fact that the gas tube roll pin isn’t included is something to keep in mind.
The gas block itself doesn’t offer extensive customization options. Its primary function is to facilitate gas flow. It’s fully compatible with any handguard designed to accommodate a low-profile .875 gas block.
Pros and Cons of Troy .875 Gas Block SGAS875OOBT00
Pros
- Reliable performance: Consistently directs gas for smooth cycling.
- Durable construction: 4140 steel and MIL-STD finish ensure longevity.
- Low profile design: Compatible with a wide range of handguards.
- Easy installation: Straightforward installation process with basic tools.
- Affordable price: Provides excellent value compared to adjustable options.
Cons
- No adjustability: Lacks the ability to fine-tune gas flow for different loads or suppressors.
- Gas tube roll pin not included: Requires sourcing a pin separately.
Who Should Buy Troy .875 Gas Block SGAS875OOBT00?
The Troy .875 Gas Block SGAS875OOBT00 is perfect for: builders looking for a simple, reliable, and affordable gas block for their AR platform rifles, especially those utilizing bull barrels or Armalite .308 heavy barrels. It’s also suitable for shooters who prefer a low-profile design for compatibility with various handguards.
Who should skip this product? Shooters who require adjustable gas flow to fine-tune their rifle’s performance with different ammunition types or when using a suppressor should consider adjustable gas blocks instead.
A must-have accessory is a quality gas tube roll pin if you don’t already have one on hand. It’s also recommended to use a proper AR armorer’s wrench for installation to avoid damaging the barrel nut or gas block.
Conclusion on Troy .875 Gas Block SGAS875OOBT00
The Troy .875 Gas Block SGAS875OOBT00 is a solid, reliable, and affordable option for builders needing a low-profile gas block for their AR platform rifles. Its durable construction, ease of installation, and compatibility with a wide range of handguards make it a compelling choice.
At $47.33, the price is definitely justified. It offers excellent value for the money, especially considering its robust construction and reliable performance. It is far less expensive than adjustable alternatives.
I would personally recommend the Troy .875 Gas Block SGAS875OOBT00 to anyone seeking a dependable and straightforward gas block solution. If you prioritize simplicity and reliability over adjustability, this is an excellent choice. Upgrade your AR build today with the Troy .875 Gas Block SGAS875OOBT00 and experience the difference!