Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
You'll be taken to Brownells to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: 093200010
Built for sight alignment work on M1 and M1A rifles, these gauges provide a repeatable indexing reference when timing the receiver and barrel components. The front gauge attaches to the gas cylinder on the M1 or the flash suppressor on the M1A, while the rear gauge fits in the stripped rear sight housing to help establish a consistent reference point. Machined aluminum construction and the included illustrated instructions make the set straightforward to use in a shop or bench setting. For armorers and serious rifle owners focused on careful sight setup, this is a purpose-made tool rather than a general-purpose accessory.
Precise, Repeatable
Indexing reference for sight alignment
Works M1
M1 gas cylinder and M1A
Rear Gauge
Fits in the stripped rear
Machined Aluminum
A matte silver finish
Includes Illustrated
Instructions for setup and use
| Blade Finish | Matte finish |
|---|---|
| Color | Silver |
| Compatibility | Front gauge attaches to the gas cylinder (M1) or flash suppressor (M1A); rear gauge fits in the stripped rear sight housing |
| Includes | Illustrated instructions |
| Length | 6 in (15 cm) |
| Material | Machined aluminum |
| Width | 1 in (2.5 cm) |
The product is described for M1 and M1A rifles. The front gauge attaches to the gas cylinder on the M1 or the flash suppressor on the M1A, and the rear gauge fits in the stripped rear sight housing.
They provide a precise, repeatable indexing reference so the front and rear sights can be aligned consistently.
The gauges are machined aluminum with a silver, matte finish.
Yes. The product includes illustrated instructions.
The listed dimensions are 6 inches long and 1 inch square.