Reximex RPA .177 vs .22: Caliber and Setup Guide
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Choosing between the walnut Reximex RPA pistols? The .177 offers a nine-shot pistol magazine; the .22 holds seven and has the higher advertised muzzle energy. Both use a regulated, sidelever PCP action. Your choice also needs to account for filling equipment and any optic you plan to fit.
Compare the two walnut versions
| Feature | RPA .177 | RPA .22 |
|---|---|---|
| Caliber | .177 / 4.5 mm | .22 / 5.5 mm |
| Compact pistol magazine | 9 pellets | 7 pellets |
| Advertised maximum velocity* | 610 fps | 515 fps |
| Advertised maximum energy* | 7 ft-lb | 10.7 ft-lb |
| Air reservoir | 50 cc | 50 cc |
| Maximum fill pressure | 250 bar / approximately 3,625 psi | 250 bar / approximately 3,625 psi |
| Configuration covered here | Black frame, walnut grip | Black frame, walnut grip |
*Published performance figures are reference specifications, not a guarantee for every pellet or pistol. The stated velocity test pellets are 8.44 grains in .177 and 18.13 grains in .22. Pellet choice and conditions affect results; maximum energy and velocity should not be assumed to occur together.
Which caliber should you choose?
Consider .177 for a target-practice or plinking setup where magazine capacity matters. Its compact magazine holds two more pellets than the .22 version. This does not establish that one caliber is inherently more accurate.
Consider .22 if you prefer that pellet size and the higher published energy rating. You trade some magazine capacity for that specification. Neither the caliber nor a catalogue energy figure alone determines suitability for a particular distance or task.
What comes with the walnut RPA?
Both listings describe a padded soft case, two compact pistol magazines, a single-shot tray, and male and female filling probes. An included threaded muzzle adapter is also listed. These are pistol packages: a shoulder stock, scope, air pump and compressor are not listed as included.
The detailed package list also mentions an extra, larger rifle-style magazine, while the short included-items summary names only two magazines. If that extra magazine matters to your purchase, ask us to confirm the current package before ordering. Use the compact magazines with the open sights; the taller rifle-style magazine obstructs their sight line.
Plan the air supply before ordering
These are precharged pneumatic pistols, so budget for a suitable PCP hand pump, compressor or charging cylinder unless you already have one. The filling probes connect the pistol to compatible equipment; they do not supply air. Confirm the pressure rating and connection match your equipment, and follow the supplied manual. This guide is not a filling procedure.
Check the optic mount, not just the optic
Open sights are included. For an optional optic, these listings specify an 11 mm dovetail. The forward rail section sits higher than the rear section: two mounts spanning both sections need height compensation, such as suitable adjustable rings. Confirm the complete mount arrangement before buying; do not assume an ordinary fixed-ring pair or Picatinny mount will fit.
Choose your walnut RPA
- View the Reximex RPA Walnut .177 - nine-shot compact magazine.
- View the Reximex RPA Walnut .22 - seven-shot compact magazine.
Check each product page for current price and availability. For help checking a filling connection or optic arrangement, contact Airsenal before ordering.