Page 2 - Crosman .177-Cal Steel Breech Kit Reviews

Adds a dovetail and improves accuracy of an otherwise less than adequate Crosman 1377. The sights and accuracy of the 1377 are terrible out of the box. However, this kit fixes that but also requires you to get another sight because you can't remount the original (although I wouldn't want to anyway) and doesn't come with any rear sight. Now my 1377 is an accurate pellet firing machine.

I agree with former reviewers about the screw underneath the chamber. I fixed this problem by getting a pellet loader, which helps in other situations as well.

Crosman should make a model with this already installed. If you're serious about hitting your target, this kit is required for the Crosman 1377.

The steel breech kit is easy to install and allows you to put a scope or red dot sight on your 1377. It is a nice upgrade from the plastic breech that comes with the gun.

My breech kit was from the latest batch and I found that the breech screw hole was too deep which caused pellets to jam when loading. I solved the problem by backing out the screw a couple of turns which raised it enough to allow the pellets to feed properly. This problem was the reason for 4 stars instead of 5 overall.

I contacted Crosman and they said that my solution was what they recommended to resolve the problem.

I ordered two because I own 2 1377 pistols. I like the looks and feel plus it makes a world of difference in the way the pistol shoots. Very nice and I am happy even tho I had to make a couple supper thin washers for under the breech screw.

The breech screw hole is much to deep. Redesign the hole to where the screw will fit flush so the pellets will not jam.

To get the pellets to slide in without hanging up, get some 4-48 x 1/4" button head screws with the 1/16" hex and then make a supper thin metal washer. Even for the button head screws to raise them up just a bit. The original 0.050" screws strip the heads out to easy. That is why you use the button head screws.
Anyway, Keep filing the supper small washers to where the screw and washer fit perfect and it will work just fabulous.
It's a lot more work but you will like the finished work.

Provides a solid base for mounting optics.

The breech screw is countersunk too far. When screw is installed there is a hole that the pellets cross over and get tilted. I am having to point the gun upward, place the skirt over the bolt and fiddle with it to get the pellet lined up properly with barrel. So it needs a filler of some sort in that space. For $40 I expected a more precise fit.

Bolt seems to have a lot of play. The fit of my plastic breech was better with the exception of not having dovetail.

Ease of installation, nice fit and finish

Nothing

The steel breech has been a solid platform for the red dot that I mounted. The breech stabilized the barrel. Still, I was getting inconsistent target results and did not know if it was because of the red dot or the Crosman pellets I was using, purchased from Walmart. The types I purchased were Pointed, Destroyer, Hollow Point. More on this below.

Cannot think of anything to change.

I'm using a Crosman 1377 indoors at 20 feet. The steel breech and an inexpensive red dot have given me a stable and reliable platform. The missing piece for me was finally getting reliable results from pellets. I ordered some Crosman Wad Cutters from Pyramid. That's the pellet that has been the missing link for my airgun. I am now very satisfied with the groupings that I'm seeing. If you are experiencing inconsistent results, try wad cutters. Now my question is: does Pyramid receive better quality Crosman pellets than does Walmart? There is an obvious difference in the performance of the pellets from these two merchants; however, I have never seen wad cutters at Walmart, so I haven't been able to compare exact types. Would like to hear a comment from Pyramid on this.

Works as described.

Quality machining, perfect fit

nothing

When you purchase from PyramidAir it is great value and awesome service.

excellent replacement for plastic breech

improve front breech screw,does not fit flush and hangs flat nose pellets

a must if using peep sights

Solid! Easy installation. Directions fairly clear. With the standard factory plastic breech....the barrel is not anchored down; subsequently, the barrel 'drifts'.......causing a greater level of inaccuracy. With the new steel breech, there is a set-screw (grub-screw) that anchors the barrel down.....preventing the barrel from randomly drifting. Accuracy has greatly increased......and all of the random 'flyers' (from barrel drift) are now gone. The only 'flyers'...... are simply due to an occasional bent-skirt (or otherwise: deformed) pellet.

There is one major problem: When a pellet is dropped into the pellet tray.....and you just start to slide the bolt forward....... the pellet drops down into a screw hole......and the gun will not chamber a pellet. Using tweezers ..... you can carefully place each pellet directly into the breech.......circumnavigating around the screw hole. I have yet to contrive methodology to mitigate this problem. (((Maybe a drop of Loctite to fill the hole.......then sand down the Loctite to the correct circumferential radii (.177) of the rest of the breech))).

Figure it out. Make it work. The accuracy gain.....is worth it!
(( I'm surprised there's not more flavors of multi-pump pellet pistols out there. Air is free. You never run out of air. And......these things are unsuspectingly incredibly fun!!! ))

The breech is very solid and well made and fit very well

Maybe just a little shorter

I found the instructions on how to assemble very vague a couple of pictures or diagrams would have helped. It was a easy install though

Speedy delivery and great contact with pyramydair.

Nothing

Solid design, feels good, shots feel heavier.

This has a 3/8 dovetail.

Simple to install. Scope installation on steel breach was easy and a solid fit. No more scope wabbel.

Diagram was very blurry and poor quality. A basic novice could benefit with step by step diagrams and instructions.

I would like to see more optional parts to modify my crosman 1377. Parts that we available were hard to determine if they would fit or not. Especially if you wanted a longer barrel and front sight adapter. Hard to figure out if you had the parts or not. Had to look at your competition to see if they had what I needed.

Easy installation and will improve overall accuracy if using a scope.

I would like to be able to use the original rear iron sight.

Well made , all metal and is the best addition to a 1377 Crosman air pistol you can make for the money. Provides a great mounting base for optics or fixed sights .

Make them chrome plated

All my 1322 and 1377 Crosman air pistols have this addition. Note -If you are going through the trouble to change this Breech out , I would recommend also changing the transfer port out at the same time with a larger inside diameter Custom Unit to (increase air flow)

Strength and accuracy allows mounting better sights, shot groups went from 1 '' down to 1/2''

The gun should have come with this installed

the machine cut at the breach is razor sharp need to round off edge, mine cut two fingers before I took the edge off.

Can now mount a scope.

Very heavy.

Not much at present.

I could not screw the handle into the bolt because of poor thread cutting. This was not a cross-thread event. The two pieces would NOT mate. No response from Pyramyd. Disappointed.

Solid materials. Comes with necessary tools.

A bit expensive but a good upgrade. Instructions are difficult.

Watch some videos on You Tube on how to install since the instructions are difficult to read.