Quick Answer
An A2 buttstock spacer and screw set fills the gap between a carbine receiver extension and an A2 fixed stock, while the longer screw aligns with the gas port in the buffer tube to secure the stock properly.
Why You Might Need This Set
If you're swapping a collapsible carbine stock for a fixed A2-style stock, the receiver extension (buffer tube) is usually shorter than what an A2 stock expects. Without a spacer, the stock will wobble or fail to seat correctly.
The included 1.2-inch screw also features a gas port hole, which allows the buffer tube to vent pressure during cycling. Not all aftermarket screws include this feature, so the set ensures your gas system functions as intended.
Construction and Durability
This set is made from high-strength steel with solid machined construction. The spacer is precision-machined to match the A2 buttstock profile, and the screw is threaded to fit standard buffer tubes. The durable steel construction means it can handle repeated recoil without deforming.
Frequently Asked Questions
Do I need an A2 buttstock spacer for every fixed stock install?
Only if you are using a carbine-length receiver extension (buffer tube) with an A2 fixed stock. If your rifle already has a rifle-length buffer tube, you do not need the spacer.
Will any screw work, or does it need a gas port?
The screw in this set has a 1.2-inch gas port that aligns with the vent hole in the buffer tube. A standard screw without a port can block gas flow and cause cycling issues. Always use a screw with a gas port when the buffer tube has one. Check your buffer tube for a vent hole before choosing a screw.
How do I install the A2 buttstock spacer and screw set?
Slide the spacer onto the buffer tube first, then slide the A2 stock over it. Insert the screw through the stock and spacer, and tighten it into the threaded hole at the rear of the buffer tube. Torque to manufacturer specifications (typically 35–45 in-lbs). Use a torque wrench to avoid over-tightening and damaging the threads.
Product Facts
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A2 Buttstock Spacer and 1.2" Screw (w/Gas Port) Set: Solid machined construction made from high strength steel, durable and sturdy. The steel construction ensures the spacer and screw won't crack or strip under the recoil of heavy calibers, making it a reliable part for a fixed stock upgrade.
A2 Buttstock Spacer and 1.2" Screw (w/Gas Port) Set
