Hello to all! I am new to this board (but not to ARs or the shooting sports) and would like your collective feedback on some tweaks I am planning for my Bushmaster M4.
Let me start off by saying that I am aware of the limitations of this brand, but I believe that wilth some work it can be improved in terms of reliability. The rifle is a few years old, has a low round count (at this point) and has so far been trouble-free. Since I live in the Peoples' Socialist Republic of New York where we still have an AWB, I need to keep this rifle configured to meet state law. Pictured below is the rifle as currently configured with a Sully stock, Hogue grip, Magpul trigger guard and tritum front post;
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My goal is to retain its KISS configuration for recreational use but make some improvements/tweaks to enhance it's long-term reliability. Here is what I plan on doing - please feel free to comment and offer other suggestions;
1. Better staking of gas key
2. Install mil-spec receiver extension and stake
3. Install heavy-duty extractor spring and insert
4. I am also considering the MGI Buffer - is it worth it?
5. Chip McCormick trigger group - any comments on this product (I've been shooting competitively for over 25 years and can make good use of a crisp trigger pull)?
Not related to reliability, but I am also having the AK Concepts FSC556 compensator installed in place of the lame "Izzy brake" that came from the factory (and not indexed perfectly straight as typical of BM QC).
The good news is that I will soon be moving to the "Live Free or Die" state and will invest in a better rifle once I am a resident of NH. For now, I just want to make the BM all it can be - within reason - but I do plan on holding on to it.
Thanks!
Edit - BTW, this rifle is about 3 years old. I purchased the upper direct from BM and the lower (with A2 stock) from a local shop. Finish on both are good/excellent, fit between upper and lower is good. The rifle sighted in with only a very minor windage adjustment (FSB is on staight) and the factory trigger pull is not bad at all (have not measured weight, but it does not feel heavy and it breaks quite cleanly with very minimal take-up). The gas key is staked, but not well. My only complaint so far is the poorly-indexed brake, which will soon be replaced anyway. That said, the more I read the more I believe that mine is a better sample.


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