1377 build........" El Cheapo "

[4th Yote Recon Bn.]

Hi All:
I just had the chance to test  this 1377 out on some live game. One pidgon zaped!! With the adjustments on the power valve and with the adjustments to the trigger this carbine seems to be alot smoother in operation than expected.Even the pumping action seems to be alot smoother than normal?? At 7 pumps I took this park rat at 50ft. using crosman destroyer ex one shot to the fuse box and lights out.

4Th Yote

ps: neighbor behind me loves fresh squabb lol

[MountainMan126]

That's what I like to hear! Park-rat headshot at 50 is good any day.


 I will have finished pics of grips tonight. The topcoat is drying while I work.........or am at work as the case may be. Still have a bunch more mods coming that are just about done. I keep gathering ideas and materials as I go. New foregrip is high on my list to get done.

[4th Yote Recon Bn.]

Hi All:

 Hey Mountain Man I hear ya on the forearm grip. I need a router so I can make forearm to look like a 760 - big and boxy. The purpose of this style is if I leave a 1/4" of material on the bottom I can mount a weaver rail to the forearm. Then I'll mount bipods for assault,vertical grip for tactical,and flashlight for cqb. LOL

4Th Yote

[poomwah]

looking forward to see the grips

[MountainMan126]

Grips are done, again trying to do as much on my own, and with the original parts as possible. I made them right hand  specific and scuffed all the remaining smooth areas with 150 grit. Then outside and sprayed down with rubberized undercoating. A little better texture than hard smooth plastic, should have good adhesion without primer. It is also paintable and tough as nails.

4th , I have a different approach to the foregrip, and right now includes a weaver mount as well.

[MountainMan126]

Front sling mount made from a shaft collar, about 2 bucks at the hardware. A 10/32 thread sling mount, cut down and threaded all the way down. You can drill the hole for this thread tap with a 5/32 bit, but you should use a #21. Red thread locker on this stuff. Use a standard quick release mount. 2 bucks in nylon webbing from the fabric store and some snaps, so I don't have to learn to sew just yet.
Is drilled off to the right on purpose so it hangs out of the path of the pump stroke naturally.



The rear mount is easier , one screw style base chrome snap , commonly available from the hardware . Some very slow careful drilling and mounting. Lockwasher, and red lock tite here. Once the cap was pressed on to the sling I had to file the mating part on the gun to get it seat nicely. But now it is done and I have a very funtional , quick release system home made sling.



Enjoy , I think this is a good one , especially since it hides the divet in the top of the longer crosman barrels. I think it must be a sight alignment point or something, but it is gone now .

Ethan

[poomwah]

I am really digging this build

[MountainMan126]

I am really digging this build

Thanks ,I think so far having gotten the gun at a good deal, and having paid too much for the barrel. With extra parts I have probably spent about 100 bucks to make everything. I have not bothered tracking how much time I spent on this, it is probably better that way.

[4th Yote Recon Bn.]

Hi All:

Mountain Man nice sling. I made my sling a single point style for under $1.25. I would post pix here but keeps telling me my file is to big to post. Might have to join photobucket.

 4Th Yote

[4th Yote Recon Bn.]

Hi All:

Mountain man I see that the set screw on your set collar is facing in the up position. Any chance you could remove the set screw and replace with one of those screw in type of sight post??? Just a thought.
 4Th Yote

[MountainMan126]

4th , I use webshots for my photos, i can paste at 600 pixels. You can also click the photos in the post and view fullscreen at their site.

The set screw on top is a large coarse thread, If you mount in a different position and drill and tap 8-32 you should be able to thread in and use most of the common pins from an archery sight.

[MountainMan126]

A friendly reminder, you can machine Delrin on a mini wood lathe like for pen-making. This is a lot cheaper and easier to store than a metal lathe and some local woodworking places offer free intro classes to get started.
I had my wife take the pic so you can see the set-up. Clamp the original gun barrel in the chuck. Cut and drill the stock 7/16 all the way through. Drill and tap the 8/32 set screw hole in the side that with hold it on the gun. Use the set screw on the barrel in the lathe and the live center to keep and true round motion and cut to what ever shape you want . I drilled a snug hole in the top and cut a nail down to have a center bead like a shotgun ramp. The sight is usually 15 bucks at dicks , I got one of the $10 rewards coupons, out the door for a little over 5.



This is the finshed muzzlebrake with front sight mod. You can polish as much as you want , I liked the matte finish, with the scratches . Total cost on this is about 20 bucks without the coupon, I have a good place to buy raw materials though.
Watch out where ever this double sticky tape touches is where it will stay.

[poomwah]

is there any reason you couldn't do that on a larger wood lathe?  I imagine it would work just as well, but figured I should ask.
I've got a 14x40 sitting in storage.
 where would you suggest buying delrin?

[MountainMan126]

No ,a larger wood lathe will do everything I can do better. They are heavier , which translates to less vibration etc. I get stuff like that from a industrial plastics company that is local for me. I am sure you could buy online. For stuff like this I get round stock, didn't want to bother cleaning corners off square stuff.

[MountainMan126]

I figured I should shoot a little instead of just building stuff. New muzzle brake doesn't change POI except the site sits higher than the original ramp so some adjustment was still needed. Interesting as it may be , the brake goes approximately 1/2 inch past the muzzle and is a clean 7/16 hole straight out. Still it changes the report, a little louder and a little more a harsh , a crack would be accurate.

[MountainMan126]

I wish I had taken the stock info for comparisson , if anyone has an accurate weight for a stock 1377 please post.

This one as it currently sits , sling , longer barrel, muzzlebrake and all at 2lbs 6.8oz on a digital postage scale.

[MountainMan126]

Solid pin , I forget what they call the pin at the hardware, hitch pin? Either way it has a detent ball to hold in place, once it wears in I may shim with a washer. I cut the end with the hole and ring off and tapped threads at a 1/4-20 , added a brass acorn nut and done.



I drilled the pump arm separate, and from each side independantly. Did the pump tube and plastic together, again each side independantly with a 1/4 inch plastic wedge cut, and shoved in the middle so it wouldn't flex too much while drilling. Once all the holes were drilled I passed the bit clean through everything.



I know there is some conventional wisdom against drilling any metal out of the pump arm, but it is a clean hole all the way through that now has greater contact area, smoother surface without the roll pin and the ability to be greased. So I am hoping to reduce wear and friction, pump stroke is super smooth right now. No rattles, no side to side motion, really feels prefect, but I will keep you posted on any problems or reinforcements needed as I put the shots through.

[Bentong]

is there any reason you couldn't do that on a larger wood lathe?  I imagine it would work just as well, but figured I should ask.
I've got a 14x40 sitting in storage.
 where would you suggest buying delrin?

Try here >>  http://www.onlinemetals.com/merchant.cfm?id=203&step=2&top_cat=181

[BigErn]

Awesome sling and brake!

Ernesto

[MountainMan126]

Thanks BigErn, I am trying a lot of new stuff with this build. Having done the one in my sig. with mostly purchased and bolt on type mods gave me a whole bunch of spare parts. Not to mention a lot of ideas seeing how others have made these upgrade components with fancier equiptment. Not everything I have tried here has been a complete success but it has all been educational , case and point is the grips. I love the new shape by comparisson, but am starting to think the rubberized undercoating will not hold up under the repeated abuse from pumping. I will probably make new ones from wood, got a bunch of scraps of different types hanging around from other projects.

Thanks Bentong, I have bookmarked this website as well. There is never enough money, storage  space, or places to get fun stuff work with.