Date: 28/9/2020 13:59
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Crosman .177 Cal Steel Breech Kit & LPA Rear Sight + Case

4.53 reviews
Crosman .177 Cal

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1-year limited warranty



List Price $99.99 Save $10.00 (10%)

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Crosman .177-caliber steel breech kit and LPA rear sight
  • Crosman .177-cal. steel breech kit
  • Fits Crosman airgun models 1377/PC77

  • Crosman LPA MIM rear sight
  • Adjustable for windage and elevation
  • Does not fit 3/8", 11mm, Weaver or Picatinny dovetails/bases

  • Pistol case
  • Easy-open snap latches
  • 2 padlock tabs
  • 15.5"x12.2"x3.6" exterior dimensions
  • 14.7"x10.6"x3.3" interior dimensions
  • Eggcrate foam

The steel breech upgrade gives you a better base for adding a scope or dot sight. It's sturdy and will hold up better than the breech that comes with the gun, not to mention that now you have a rail on your gun that allows you to install more goodies! The LPA rear sight is also an upgrade from the gun's original one and will aid target acquisition. If you want to protect your pistol, put it in the included case when you transport it!

In stock

Item Code: PK-BR-UP-177-C [PY-A-5379]

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Average Customer Review

4.5 (3 reviews)
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5.0 5.0

5.0 5.0

By Andrew from USA on 2020-04-27
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0.00 ratings

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Things I liked: Although the factory sights are adequate the steel breach block provides so many more options with the dove tail.

Things I would have changed: The installation instructions were adequate but could be better.

What others should know: Be careful how you install the transfer port when you swap breaches. Remember how you took it apart because you’ll have to put it back together again.


4.0 4.0

4.0 4.0

By Neil from USA on 2019-11-10
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Things I liked: The breech kit, LPA rear sight, and case were great improvements over the as-purchased parts. The installation wasn't difficult (more on that below), and the 1377 feels much more solid. The case is a definite boon to storing the pistol.

Things I would have changed: The instructions were a sheet of diagrams and directions that looked like they had been photocopied a couple of times back in the 90s. This made the installation difficult. Additionally, there were one or two parts that weren't described or mentioned in the diagrams (or maybe they were, but we couldn't make them out). YouTube videos came to the rescue. I looked at a couple of them, and everything became very clear.

What others should know: When we were sighting in the pistol with the LPA sight, we ran out of adjustment room at the low end. At about 20 feet, we were still about an inch high. We are searching for alternative front sights that could correct the problem. In my opinion, the polymer breech kit and sight should have been installed at the factory instead of installing the plastic sight, which never tightens up to stay put.


5.0 5.0

5.0 5.0

By Anthony from USA on 2015-07-20
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5.01 rating

Things I liked: Well made, will help keep my Crosman working for a long time.

Things I would have changed: Have a left-handed version available as an option.

What others should know: Lots of you tube videos if you need installation help.


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  • GLEN from USA asked:

    Is the pistol case big enough to accommodate a scoped or red dot equipped 1377 or 1322?