I believe hard chroming of that piece was a
Gen 2 mod.

The "Pederson hesitation lock" sold me.This gun is dimensionally the same as a FEG PA-63(in 9mmMak), but with,IMO, less felt recoil.

Grabagun no longer lists an R51 Mag.

The two that came with my gun, bought in January, and the two(factory) from ebay , all feed fine. The slide closes on full mags, on all 4.

I absolutely love my  R51. It is a great ptstol. Remington will no longer profit from me. My last REM purchase(not R51) was a Model 81, They realized their profit in 1948.

They have already announced a .40 pistol. That may be why my 9mm mags are so hard to load. That may be why the feeding problems started.

The Charlotte gun 0024092R51 was made in 2017, according to Remington. Other members have been told 0032067R51 was built 11/16 and 00347XXR51 was built 10/16. These numbers don't work for me. I don't think I would trust info@Remington.com!

More from the friendly people at Remington:
1) My email-Dear sirs,

I have two R51 pistols and would like to know their dates of manufacture . The serial numbers are: H000920R51 and 0024092R51. Thank You,
2)Their reply-Good morning, both of these firearms were made in 2017. Thanks
3)My reply-I DEEPLY appreciate your exhaustive effort to supply me with the information I was seeking. Regards,
4)Their final-You are welcome. Have a great day .
I am glad I have 2 R51's because it will be a cold day when I spend another dime on a new Remington product.
I don't even really believe that the H000920 serial number was built in 2017.

I would not publish the serial number of a gun that I didn't buy new and have the receipt for.

I don't know, but I couldn't leave it alone. They got my reply, respectful and sarcastic.

The AR article, that convinced me to buy the pistol, featured ser # H015300R51 on the cover in October 2017

I think I will retire the 920 ser #. I got my answer back from Remington on dates of manufacture, Quote:"Good morning, both of these firearms were made in 2017. Thanks." That was less than informative!

Yes, Huntsville. I bought the second to keep NIB,but I'm thinking maybe I should preserve the 920. What do you think?

Bought my first R51 in January, ser# H000920R51, bought my second last Friday, ser# 0024092R51. Have emailed Remington for manufacture dates, awaiting a reply.