Mrod trigger in Discovery?

Jump to

Author Topic: Mrod trigger in Discovery?  (Read 1241 times)

Offline PyroMonkey

  • Sharp Shooter
  • ****
  • Posts: 288
  • Real Name: Andy
Mrod trigger in Discovery?
« on: August 16, 2012, 12:03:36 AM »
How difficult is it to install an Mrod trigger on a discovery? 

I know it's possible but I'm not sure how much modification is required. 
Can I go back to my disco trigger if I want?
Also, is it reliable, will it wear out over time?

I plan on using a trigger guard from a crosman challenger or make one from some alluminum.

  • NC
2014 Hunt Chart:

Rifle               .22 Discovery       .177 NPSS              .177 Powerline 901
Squirrels         100
HOSP              000
Crow              000

Online rsterne

  • Moderator
  • Old Timers
  • *****
  • Posts: 8184
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Mrod trigger in Discovery?
« Reply #1 on: August 16, 2012, 12:16:52 AM »
The trigger is a "bolt on" as far as the screws holes in the tube are concerned.... You will need to widen the inletting in the stock a bit.... You should also use a hammer and striker from the Challenger or PRod as they don't have a "waist" which can impact the sear and shatter it, although some haven't changed the hammer and report no problem.... Filling the groove in the Disco hammer with JB Weld is an alternative.... If you use the cylindrical hammer from the Challenger or PRod you will have you modify the top front to clear the front breech screw in the Disco.... AFAIK, that's it.... The trigger is a far better quality than that in the Disco....

Bob
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Offline MustangMike

  • Old Timers
  • *****
  • Posts: 6660
  • Real Name: Mike
Re: Mrod trigger in Discovery?
« Reply #2 on: August 16, 2012, 06:15:28 AM »
bob is correct, its a simple bolt on swap, the prod/challenger hammer is easy to mod if you have a dremel or you could contact junkyspace and see if he could do the modding to one for you ? he did a superb job  on his and you can find it in the machine shop gate under the simple home mods or whatever. its the first sub gate in the machine shop gate..
  • atx
.25 hatsan at44s-10 (down the road)
.22 disco,  bnm breech & shroud, katana stock, 7" tube extension, leapers 3-12x40AO
.22 ccs 2400kt, extensively modified using the sikes touch.

www.airgunlab.com
www.discosrus.net
Cera Kote services: ddgrego---Designsbydink

Offline mcc1961

  • Old Timers
  • *****
  • Posts: 1049
  • I'd buy that for a dollar!
Re: Mrod trigger in Discovery?
« Reply #3 on: August 18, 2012, 03:38:49 PM »
I have one on my Disco and I just used the putty that  you work up between your fingers and applied it to the hammer. It dries in an hour and then can be sanded.I bought it at Lowe's for around $6.
2012-14 Hunting stats
8 squirrels
7 English sparrows
1 pigeon
2 starlings
1 crow

Offline grumpy

  • Old Timers
  • *****
  • Posts: 2205
    • http://www.airgunsforum.com/
  • Real Name: David
Re: Mrod trigger in Discovery?
« Reply #4 on: August 18, 2012, 04:38:12 PM »
Prod triggers also fit disco's if you want to go that route.
  • SE Michigan

Offline MustangMike

  • Old Timers
  • *****
  • Posts: 6660
  • Real Name: Mike
Re: Mrod trigger in Discovery?
« Reply #5 on: August 18, 2012, 08:29:24 PM »
Prod triggers also fit disco's if you want to go that route.

That is correct, the challenger and the prod both share the same hammer. But don't forget to order the hammer assembly so you get the striker as well. The striker is adjustable for hammer throw so it gives you an added form of adjustment.

But you will still need to cut the dip in the front top of it to clear the breech screw
  • atx
.25 hatsan at44s-10 (down the road)
.22 disco,  bnm breech & shroud, katana stock, 7" tube extension, leapers 3-12x40AO
.22 ccs 2400kt, extensively modified using the sikes touch.

www.airgunlab.com
www.discosrus.net
Cera Kote services: ddgrego---Designsbydink

Offline PyroMonkey

  • Sharp Shooter
  • ****
  • Posts: 288
  • Real Name: Andy
Re: Mrod trigger in Discovery?
« Reply #6 on: August 18, 2012, 08:45:58 PM »
Prod triggers also fit disco's if you want to go that route.

What is the difference between the two?  Which one is "better"?  I know that's hard to answer but basically, do they function any differently or is it just a different blade?
  • NC
2014 Hunt Chart:

Rifle               .22 Discovery       .177 NPSS              .177 Powerline 901
Squirrels         100
HOSP              000
Crow              000

Offline MustangMike

  • Old Timers
  • *****
  • Posts: 6660
  • Real Name: Mike
Re: Mrod trigger in Discovery?
« Reply #7 on: August 18, 2012, 09:14:21 PM »
the mrod trigger is the best crosman rifle trigger, and the prod trigger is the best crosman pistol trigger.

go with the mrod trigger
  • atx
.25 hatsan at44s-10 (down the road)
.22 disco,  bnm breech & shroud, katana stock, 7" tube extension, leapers 3-12x40AO
.22 ccs 2400kt, extensively modified using the sikes touch.

www.airgunlab.com
www.discosrus.net
Cera Kote services: ddgrego---Designsbydink

Offline Norm_m

  • GTA Vendor
  • Classified Moderator
  • Old Timers
  • *****
  • Posts: 1799
    • Discos R Us
  • Real Name: Norm
Re: Mrod trigger in Discovery?
« Reply #8 on: August 18, 2012, 11:06:11 PM »
The PRod trigger is not a drop in fit! There was a topic about the PRod trigger fitting a Disco that did get a little nasty! It was about the sear did not reach high enough to safely engage the hammer.
It did get into how to fix it but I do not remember all the details.

As far as bolting up, yes it is a perfect fit.

Norm

Online rsterne

  • Moderator
  • Old Timers
  • *****
  • Posts: 8184
  • Mozey-On-Inn and see what Coalmont has to offer
    • Mozey-On-Inn
Re: Mrod trigger in Discovery?
« Reply #9 on: August 18, 2012, 11:15:09 PM »
Actually, it was putting a PRod trigger on an MRod that was the problem.... The MRod tube is a larger radius and a thicker wall, and it was the combination of those that caused the PRod trigger to be a questionable fit and raised a safety concern.... The Disco, PRod, and 22XX tubes are all the same diameter and wall thickness, so the PRod trigger fits all of them perfectly, and functions safely.... There is also an issue putting a PRod trigger on a pumper (13XX) tube, involving the sear hitting the outside of the tube and not being able to move up far enough to cock.... This is because of the smaller diameter of the 13XX tube.... It can be easily solved by filing a bit of a flat to miss the top of the sear, or lengthening the sear slot in the tube on the front end....

Bob
« Last Edit: August 18, 2012, 11:17:28 PM by rsterne »
Dominion Marksman Silver Shield - 5890 x 6000 in 1976, and downhill ever since!
Airsonal:
.177 Diana 34, 1750 CO2 Carbine, .177 Uber-Pumper, .22 Uber-Carbine, .25 Discovery, 2260 PCP 8-shot Carbine (Grouse Gun), 2260 PCP Rifle (37 FPE), 2560 PCP Rifle (52 FPE), .22 BAM B-26, .22 BAM B-51, Hatsan AT-4410 Long (70 FPE),
"Hayabusa" Custom PCP Project (Mk.I is .22 & .25 cal regulated; Mk.II is .224, .257, .308 & .357 unregulated; working on the Mk.III, a .410 shotgun, and .458 cal)

Offline Norm_m

  • GTA Vendor
  • Classified Moderator
  • Old Timers
  • *****
  • Posts: 1799
    • Discos R Us
  • Real Name: Norm
Re: Mrod trigger in Discovery?
« Reply #10 on: August 18, 2012, 11:26:52 PM »
Yes Bob now I remember! Seems like I had a moment of sometimers, sometimes I remember sometime I don't! LOL
 I new it effected me in some way as I had the PRod trigger on my MRod AR Carbine and it had been modified to work.

Thanks for correcting me on that!

Norm

GTA - What's been your success with air gun target practice?