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Crosman .177-Cal Steel Breech Kit, Fits 1377, 1740, 1760 & PC77 Air Guns

Crosman .177-Cal Steel Breech Kit, Fits 1377, 1740, 1760 & PC77 Air Guns

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1-year limited warranty

SKU PY-A-4386

$37.99

List Price $42.99 Save $5.00 (11%)

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  • Description
  • Customer reviews
  • Q & A: 3 answered questions
  • Crosman .177-cal. steel breech kit
  • Fits Crosman airgun models 1377,* 1740, 1760 and PC77
  • Will accept the Crosman LPA MIM rear sight

The original rear sight that comes with any of these airgun models will no longer fit on the steel breech. If you want a rear sight, the Crosman LPA MIM rear sight is made for this kit (CR-2300-010[PY-A-4385]).

*This breech does not fit older model 1377 air pistols with a sliding breech cover.


In stock

Item Code: CR-1377SBPK [PY-A-4386]

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Overall rating:5.0 5.0

Value for money:5.0 5.0

  By James from USA on 2015-04-16
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Things I liked:I ordered the steel breech kit to install on my Crosman 1377 primarily for two reasons: I wanted to be able to install a different sight and the longer breech secures the barrel better. I found that the kit was very easy to install. Start to finish time was less than 20 minutes with about 10 minutes of the time crawling around on the floor hunting that little set screw that I dropped. My fault, I wasn’t sure how long the set screw was and I backed it out too far. After installation the barrel is rock solid in the breech. I expected an improvement in accuracy but accuracy was unchanged. I mounted a cheap red dot on the new steel breech. I expect that accuracy will increase after I mount a better sight.
Things I would have changed:Include an extra set screw.
What others should know:This is a great upgrade for the Crosman 1377. Several reviewers commented on the directions. I had no problem following the instructions. Just take your time and make sure that you understand them before starting. The rear sight that is on the plastic breech will not mount on the steel breech.

Overall rating:5.0 5.0

Value for money:5.0 5.0

  By Donald from USA on 2015-04-05
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Things I liked:Fits great !!

Overall rating:5.0 5.0

Value for money:5.0 5.0

  By Michael from USA on 2015-03-10
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Things I liked:The price at Pyramydair was the lowest I could find. This is a significant upgrade from the plastic breech that came on my Crosman 1377 and provides a solid base for multiple sight options.
Things I would have changed:The small allen screw in the center should be modified and made to fill the threaded space when tightened. As it is now, I have to make sure I carefully roll a pellet into the breech just ahead of the threaded hole. If I'm not careful, the pellet catches on the hole and has to be removed and re-inserted. This may not be a problem with an open breech but I have a red dot sight which spans the breech opening.
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  • karl from USA asked:

    Can this breech be used for a 2240 177 conversion?

    • Dan the Man from USA:

      No, since the barrel will still be .22 cal.

  • Keith from USA asked:

    What size dovetail does this breech have?

    • Elizabeth from USA:

      3/8

  • Rob from USA asked:

    hi, is this compatible with the older pull-cock version? I got mine in 1995 thanks

    • Tyler from USA:

      You would need to call Crosman and ask them. Their number is 1-800-7AIRGUN.

See all discussions »

Compatible with Crosman .177-Cal Steel Breech Kit, Fits 1377, 1740, 1760 & PC77 Air Guns

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