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Ruger 10/22 FRT Mars Trigger (Page 4 of 4)
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Originally Posted By FlatlandBusa: I wasn't going to try getting a Mars trigger in a 10/22 running until there was a solution for the severe bolt bounce every 10/22 has. I attempted to solve it with various lubes, including grease, however by the time the lube was thick enough to dampen bolt bounce the rifle wouldn't run reliably. Enter the Bore Buddy anti bounce bolt. I installed one of these last night and slow motion video shows the bolt bounce is gone! The action also sounds much better. I have zero doubt now that this will run reliably in reset mode. The Bore Buddy bolt is expensive at $400, however the quality is excellent. The bolt appears to have more damping mass than the Norrell bolts. Additionally all internal corners of the bolt surrounding the anti bounce weight are radiused generously so cracking shouldn't be an issue as occasionally reported with the Norrell bolts. |
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So I just did my first 10 round mag dump. The first mag I tried was loaded with Winchester 45gr super suppressed but it shot one round and did not eject the fired casing. So I tried some CCI mini mags and it shot a 10 round mag with no issues. I haven't put the supplied recoil spring in it yet. Is the spring that comes with the kit a stronger or weaker spring? Wondering if it will help with the subsonic loads. |
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Originally Posted By fulautotank: So I just did my first 10 mag dump. The first mag I tried was loaded with Winchester 45gr super suppressed but it shot one round and did not eject the fired casing. So I tried some CCI mini mags and it shot a 10 round mag with no issues. I haven't put the supplied recoil spring in it yet. Is the spring that comes with the kit a stronger or weaker spring? Wondering if it will help with the subsonic loads. The included recoil spring is weaker, the hammer spring is a stock spring with one coil cut off. |
Middleofnowhere, Nebraska
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Originally Posted By FlatlandBusa: The included recoil spring is weaker, the hammer spring is a stock spring with one coil cut off. Originally Posted By FlatlandBusa: Originally Posted By fulautotank: So I just did my first 10 mag dump. The first mag I tried was loaded with Winchester 45gr super suppressed but it shot one round and did not eject the fired casing. So I tried some CCI mini mags and it shot a 10 round mag with no issues. I haven't put the supplied recoil spring in it yet. Is the spring that comes with the kit a stronger or weaker spring? Wondering if it will help with the subsonic loads. The included recoil spring is weaker, the hammer spring is a stock spring with one coil cut off. I just tried some CCI standard velocity and it ran them ok. I tried a 15 round mag and it shot all but the last round. It stove piped the 14th fired round and the 15th was in the chamber. I would assume that is possibly from the bolt not traveling far enough back to get positive ejection but it was far enough to strip the last round in the mag? |
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AL, USA
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"ETA - Put the 8" barrel and re-installed everything else. Suddenly, a lot of bolt bounce issues. This was with both CCI Blazer (HV) and CCI SV and with a can." The Bore Buddy anti bounce bolt corrected all the problems I was having getting the Mars trigger to reliably work with my 8" barrel 10/22 |
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Originally Posted By jgg2: "ETA - Put the 8" barrel and re-installed everything else. Suddenly, a lot of bolt bounce issues. This was with both CCI Blazer (HV) and CCI SV and with a can." The Bore Buddy anti bounce bolt corrected all the problems I was having getting the Mars trigger to reliably work with my 8" barrel 10/22 I have a spare Norrell bolt with anti bounce weight which I'm going to try with the MARS and 8" barrel. If that works I'll get a Bore Buddy. Maybe that'd work with my Norrell gun too. I just thought it was interesting I had no problems with the MARS trigger until I went to the short barrel. |
"Government is not the solution to our problem; government is the problem." - Ronald Reagan
"Everything I want to do is illegal." - Joel Salatin
"Everything I want to do is illegal." - Joel Salatin
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Integrally suppressed and now goes Brrrrrrt. Definitely save the slave pin that comes with the MARS trigger. I pulled the MARS trigger out with out putting the slave pin in  . That liitle spring that goes into the trigger is a bitch to get back in. |
An armed society is a polite society.
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Originally Posted By fulautotank: Integrally suppressed and now goes Brrrrrrt.https://www.ar15.com/media/mediaFiles/138939/8661-3830126.jpg I just bought an integrally suppressed barrel and I'm thinking this trigger will need to be next. 
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“Hokey religions and ancient weapons are no match for a 10mm at your side, kid.”
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Originally Posted By AJE: I just bought an integrally suppressed barrel and I'm thinking this trigger will need to be next. Some don't like that it is not a 3 position selector but if you want to do a single shot just hold the bolt closed with your thumb or finger.  |
An armed society is a polite society.
A couple of slow motion videos, first of a stock 10/22 and second with a Bore Buddy bolt. The stock bolt bounce is what makes these so challenging to get running with a reset trigger. September 20, 2026  September 20, 2026 Edits: clarity |
Middleofnowhere, Nebraska
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Finally got my trigger to be able to drop the hammer. I called MARS and talked to a tech, he sent me a new sear and disconnector for free. Drops the hammer fine now. They are pretty awesome for sending the parts. Went to test fire today- got about a 15rd burst and a couple shorter ones. Then had a piece of brass stuck in the chamber and no way to remove it. The barrel is a 5” barrel I had laying around, cut down from an OG ruger one. Chamber may need polished or reamed, before the stuck case it was having extraction and double feed issues. But the gun was thrown together with parts from different guns and places, just to see if the trigger would run. Gonna get a borebuddy bolt and build a gun around it for FRT use. Thinking 8” barrel and a can. |
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Originally Posted By Jeeps-And-Guns: I think I remember hearing that these only work with the newer plastic trigger housings and will not fit the older aluminum housing trigger groups. Is this true? All my 10/22's have aluminum trigger housings. Mine fit in an aluminum housing. The only adjustment needed was a small amount of metal removed from the bottom of the reset lever to keep it from binding on the hammer pivot bushing. |
Middleofnowhere, Nebraska
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Originally Posted By Jeeps-And-Guns: I think I remember hearing that these only work with the newer plastic trigger housings and will not fit the older aluminum housing trigger groups. Is this true? All my 10/22's have aluminum trigger housings. |
An armed society is a polite society.
Ruger 10/22 FRT Mars Trigger (Page 4 of 4)
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