How difficult, and expensive, is it to find replacement parts and magazines?
Makarov parts are abundant and nearly free. USed mags in excellent condition can be had for $2.50 in bulk or $5 individually. Since they were made in Russia, E. Germany, Bulgaria and China there lots of different ones out there.
www.jcarmory.com has new Bulgarian military/police Maks with twi mags and a duty holster for $147 delivered. This is a tough price to beat for a new pistol. As others have said Maks are stout, reliable, accurate (as accurate as pistols costing three times as much), thin and not all that heavy. With the proper leather they can be carried comfortably.
Is there any real difference in the 9x18 and 9x19 rounds?
Of course the 9x19 will give you more power. But for carry a Mak beats a HP clones hands down. You can get decent Mak JHPs from Corbon and Fiocchi. There's also the heavy Russian FMJ that packs a nice punch.
Fnally, can these guns be picked up for less than $225 so that I can use the remainder of my budget to buy quality ammo and practice rounds?
As I said above they can be had for much less. Look around for a local FFL (use the FFL search engine at
www.gunsamerica.com) and get him to order from Greg Monte at JC Armory. A reliable FFL will charge from $15 to $25 for ordering. You're still way under $200 with a Mak.
Lost of companies make holsters for Maks. You can choose from affordable generic leather holsters at $17 from
www.makarov.com, nylon holsters such as those from Uncle Mike's, higher quality prodcuts from Bianchi or even custom leather from Lou Alessi.
I love them. DA pull is heavy but with little creep. SA is nice and firm. They're very easy to take apart. If you follow the instructions posted at
http://makarov.com/tech.html you can easily break it down to all its parts. If not removing the safety and firing pin can be done with your eyes closed after a couple of times.
Maks were desgined to be handled by raw recruits so you know they'll last. Think of them as the AK47 of the pistol world.
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So many pistols, so little money.