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The Nowlin stainless plunger tube is a purpose-built replacement or upgrade component for your 1911 frame. Machined from bar stock rather than cast, this tube starts with a solid foundation that eliminates the need for time-consuming reaming during installation. The smooth internal finish supports your safety and slide stop plungers while they move under spring tension, ensuring consistent function across thousands of rounds.
What makes this tube stand out is the attention to parallel sides and extended length staking studs. When properly installed and staked to your frame, these features create a mechanically superior fit that won't gradually work its way loose over time. Many factory tubes can develop issues with staking failure or the tube separating from the frame, but the design here addresses that weakness directly.
The flat, parallel sides mean the tube seats consistently against the frame with minimal tolerance stacking. This matters because a tube that doesn't sit flat can shift during staking or gradually move with firing impulses. The Nowlin approach gives you confidence the part will stay put.
Nowlin specializes in precision 1911 parts and barrels. Their reputation comes from work with competitive shooters and serious builders who don't tolerate mediocre components. This tube reflects that same commitment to manufacturing quality, using bar stock machining rather than cutting corners with casting or substandard materials.
This is designed as a standard replacement for most traditional 1911 frames using mil-spec dimensions. However, fit can vary slightly between manufacturers. It's worth testing fitment with your specific frame before final staking installation. If you're unsure, reach out to your gunsmith or frame manufacturer to confirm compatibility.
Yes, you'll need a plunger tube staking tool to properly secure the tube to your frame. The staking process requires specialized tooling to flare the tube legs into place without damaging your frame. Many gunsmiths have these tools, and some are available through gunsmithing supply companies if you're doing the work yourself.
The extra length on the studs gives the staking tool more material to work with, creating a more robust final connection. This helps prevent the tube from loosening over time as the gun cycles. It's a refinement that improves reliability compared to standard stubs that are too short.
Installation requires proper staking equipment and technique to avoid frame damage. If you have gunsmithing experience with 1911s and the necessary tools, it's doable. Otherwise, a qualified gunsmith will ensure the job is done correctly without scratching your frame or creating a weak stake that could fail later.
| UPC | 085382301747 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | N20S |
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