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IIRC, JP said their safety did vary from Mil-Spec. I solved the problem by using a quality Mil-Spec AR safety. Trigger has worked fine and much superior to JP.

Sorry, not familiar with RPR. Suggest you start a new post in semi-A guns and ask. You should get plenty of responses as to the specs of the RPR buffer.

Buffer tubes differ only in diameter - mil spec vs commercial - and length - carbine or rifle. None are specific to AR10 or AR15.

I'm pretty sure I contacted EO for an explanation. I don't recall what it was but I know I didn't swap out the unit so it must have been a simple one. Kestrel can probably clarity the matter on yours.

BTT

Thanks! It doesn't seem like the lines would be very helpful unless you highlight them as you did.

Just got a Spuhr 34mm 4616 QDP. Caps are labeled differently - A40 and A41. The instructions don’t mention a difference. Is there a difference?

See the first post--

With a generic Mil-Spec AR15 safety in the -07, trigger functions perfectly. So clearly the notch in the safety that should allow the trigger tail to move through its full range is not to Mil-Spec, specifically not deep enough. Got an email from JP tech support - he recommends that I either...

Thanks for the info. I'm hoping someone running both the JP ambi-safety and the SSA-E will chime in. Given their popularity it would seem like there's someone out there with that combo-- My email to JP has been forwarded to their tech dept so hopefully I be able to get some answers soon. Much...

I'm familiar with the JP ambi safety instructions - they pertain to adjusting the safety to ensure the gun will not fire when in SAFE mode and involve using the adjustment screw to lightly contact the trigger tail and prevent it from moving. My problem is that the gun will not fire when the...

Neither trigger works properly in the JP receiver with the JP safety but I have no clue as to which is "out of spec". FYI Geissele CS said there is no standard (ie, Mil-Spec) for large frame ARs as there is for the small frame, and that fitting problems will occur in about 10% of AR10 variants.

Getting in touch with JP is problematic even in normal times. Customer service is nowhere near the same quality as their rifles. BTW, both Geissele and TriggerTech CS reps were readily available by phone and very helpful even though they could not resolve my problem.

The safety is JP's Ambidextrous Adjustable. It supposedly eliminates the need for gunsmithing to get the safety to work properly with "any AR" trigger components. Obviously not true. Either the safety or the lower receiver is not mil-spec; the safety only adjusts to ensure the "safe" function...

I want to replace the stock 3.5-4# JP roller trigger on my LRP-07 with one that has a lower trigger pull, and have tried both the standard two-stage SSA-E and the TriggerTech which has a reverse two-stage. I've run into problems with both of them: The TT failed the safety function test despite...

Thanks again for all your input. After reviewing a few youtube videos on the AT v3, I saw that some of the users just take the right side draft shield off, bring the trickle tube in at an angle from the right rear and place the powder cup under the spout at an angle from the right front and...

Thanks for the comments - looks like a lot of ways to skin this cat! Cutting the front panel with a hack saw and finishing with a belt sander looks very straight forward - you can even correct any minor error with the saw on the sander. Still not certain on the right panel hole - it seems like...

I've noticed in various pix of the Autotrickler/Autothrow that some users have modified the draft shields of the FX-120 scale. The most common mod appears to be a hole in the right shield for the trickler tube. It also looks like some have cut the front shield in half vertically. I'd like to...

Thanks, that's quite helpful! You don't seem to have the inconsistency of reloads that I'm experiencing. Does your JP have the LMOS and standard SCS? The max COAL/CBTO of your rifle with the H140ELDM is within 003 of mine, measured with a Sinclair COAL tool and Hornady comparator. I also note...

Thanks for the input. One thing I didn't mention initially is I use a mandrel to get about 004 bullet tension rather than the 002 I use with my bolt guns. HS -002 to 003, anneal and trim every firing. Bullet choice was b/c I like Berger products and the 140 Hybrid supposedly doesn't feed well...