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The gas cylinder plug is one of those small parts that quietly does a big job. It threads into the back of your gas cylinder and seals it up, keeping gas pressure consistent so your rifle cycles the way it should. This is the genuine Springfield Armory piece (part number MA0311), machined from matte blued steel to the same spec as the plug that came on your rifle from the factory. If yours is worn, damaged, or you just want a spare in the range bag, this is the direct drop-in answer.
Every time you touch off a round, gas is tapped off the barrel to drive the op-rod and cycle the action. The plug caps the rear of the gas cylinder and holds that pressure in place. A plug that seals correctly keeps your gas system running consistently, which is why a loose or worn one can lead to short cycling or sluggish function. Keeping this piece in good shape is part of keeping the rifle reliable.
This plug is built for the Springfield M1A and M14 platform chambered in .308 Winchester / 7.62x51mm and 6.5 Creedmoor. That covers the whole family, from the SOCOM 16 and Scout Squad up through the Standard, Loaded, and National Match rifles. Since it's an OEM part cut to factory dimensions, there's no gunsmithing or hand-fitting needed. It goes where the original went.
Installing is straightforward. During cleaning you back the plug out counterclockwise with a 3/8 inch six-point socket or a dedicated M1A gas cylinder tool, service the piston and cylinder, then thread the plug back in. Snug it down firmly, but skip the thread locker so you can pull it later for cleaning. A dab of anti-seize on the threads makes future removal a lot easier, and it's smart to check the plug's tension before heading to the range since heat cycling can occasionally back it off. Clean threads and a proper wrench are all you really need to keep it doing its job for years.
Yes. This OEM plug is made for the full Springfield M1A and M14 lineup chambered in .308 / 7.62x51mm and 6.5 Creedmoor, which includes the SOCOM 16, Scout Squad, Standard, Loaded, and National Match variants. Since it's cut to factory dimensions, it drops into any of them without modification.
Back it out by turning counterclockwise using a 3/8 inch six-point socket or a Springfield M1A gas cylinder disassembly tool. Once it's out, the gas piston will drop free so you can clean the piston, plug, and cylinder. Thread the plug back in when you're done and snug it down firmly.
Skip the thread locker. If you glue it in place you won't be able to remove it for routine piston cleaning, which the M1A needs regularly. A light coat of anti-seize on clean threads is the better move, since it lets you tighten it securely while still coming off easily down the road.
The heat cycling from firing can back a plug off if it wasn't seated tight enough, and a loose plug lets gas pressure escape, which causes short cycling or failure to cycle. Make sure the threads are clean, snug the plug down firmly with the proper wrench, and give it a quick check before each range trip. A fresh OEM plug with clean threads seals up the way it's supposed to.
| UPC | 706397853204 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MA0311 |
| Model |
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