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The Maxim Defense CQB Buffer and Spring Combination is a matched set engineered to work inside Maxim's CQB stock systems on the AR-15 platform. Unlike a generic mil-spec buffer, this one is sized and weighted to fit the shorter travel of the CQB stock, so you get proper cycling in a package that collapses down tight. At 4.65 ounces, it lands squarely in H2 territory, using tungsten and stainless steel construction to add the mass that tames a fast-moving bolt.
The extra mass in this buffer slows bolt carrier velocity, and that does a few good things at once. You get a softer, less snappy recoil impulse, less bolt bounce on the return, and increased dwell time that helps extraction stay reliable. H2 weight tends to shine on the kind of shorter, aggressive setups the CQB stock is usually bolted onto, along with anything running a suppressor or an over-gassed carbine system where the action is moving faster than you'd like.
Buffer and spring tuning comes down to reading your rifle. If your brass is flying forward toward the one or two o'clock position, or the recoil feels sharp and quick, stepping up to this H2 combo often brings the whole action back into balance. The goal is smooth and reliable cycling that still locks the bolt back on an empty mag every time, not simply the heaviest weight you can cram in there. Since this is matched as a set, you're not left guessing whether your spring rate fights the buffer weight.
Maxim offers this line in a few weights so you can fine-tune for your specific loads and ejection pattern. This H2 version is the middle-ground choice that suits a wide range of compact 5.56 builds. If you're running the CQB stock and want it to feel as good as it looks, matching it with the buffer Maxim designed for it is the easy call.
No, this buffer and spring set is built specifically for Maxim Defense CQB stock systems, which use a shorter travel than a standard carbine tube. If you try to run it in a regular mil-spec extension, it won't cycle the way it should. Make sure you have a Maxim CQB stock before ordering this combo.
The H2 buffer weighs about 4.65 ounces and uses added tungsten mass to slow down your bolt carrier. That translates to a softer recoil impulse, less bolt bounce, and better extraction reliability. It's a popular choice for shorter barrels, over-gassed carbines, and suppressed builds where the action tends to run fast.
H2 is the middle weight in Maxim's CQB lineup and suits a wide range of compact 5.56 builds. Go lighter with the H1 if your rifle struggles to lock back on empty, and step up to the H3 if you're running a suppressor or an aggressive short-barrel gas system and brass is still ejecting forward. The right pick depends on your barrel length, gas system, and whether you shoot suppressed.
The spring comes with it. This is sold as a matched buffer and spring combination, so the spring rate is paired to the H2 weight for consistent cycling. That takes the guesswork out of trying to match components yourself.
| UPC | 680017475666 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MXM47566 |
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